ATP 3-01.81

Counter-Unmanned Aircraft System (C-UAS)
AUGUST 2023

DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited.
This publication supersedes ATP 3-01.81 dated 13 April 2017.

Headquarters, Department of the Army

This publication is available at the Army Publishing Directorate site(http://www.apd.army.mil), and the Central Army Registry site(https://atiam.train.army.mil/catalog/dashboard)

ATP 3-01.81
Headquarters
Department of the Army
Washington, D.C., 11 August 2023

Army Techniques Publication
No. 3-01.81

Counter-Unmanned Aircraft System (C-UAS)
Contents
Page

PREFACE.................................................................................................................... iii
INTRODUCTION .......................................................................................................... v
Chapter 1

THREAT UNMANNED AIRCRAFT SYSTEMS ........................................................ 1-1
Introduction ................................................................................................................ 1-1
UAS Missions ............................................................................................................ 1-1
UAS Groups .............................................................................................................. 1-2
UAS Components ...................................................................................................... 1-3

Chapter 2

PLANNING ................................................................................................................ 2-1
Planning Considerations............................................................................................ 2-1
Planning Capabilities and Considerations by Echelon .............................................. 2-3

Chapter 3

DEFENSIVE C-UAS ACTIONS ................................................................................ 3-1
Overview .................................................................................................................... 3-1
Passive Measures ..................................................................................................... 3-1
Active Measures ........................................................................................................ 3-7

Chapter 4

OFFENSIVE C-UAS ACTIONS ................................................................................ 4-1
Overview .................................................................................................................... 4-1
Intelligence Preparation of the Battlefield .................................................................. 4-1
Information Collection ................................................................................................ 4-2
Targeting.................................................................................................................... 4-2

Appendix A

C-UAS TRAINING .................................................................................................... A-1

Appendix B

EXAMPLE C-UAS EQUIPMENT ............................................................................. B-1
GLOSSARY ................................................................................................ Glossary-1
REFERENCES ........................................................................................ References-1
INDEX ................................................................................................................ Index-1

FiguresFigure 1-1. UAS communication links ............................................................................................ 1-4
Figure 3-1. A method of estimating 20 degrees ............................................................................. 3-9
Figure 3-2. Vertical scan method ................................................................................................. 3-10
DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited.
*This publication supersedes ATP 3-01.81 dated 13 April 2017
ATP 3-01.81

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Contents

Figure 3-3. Horizontal scan method ............................................................................................. 3-10
Figure 3-3. CsUAS time/distance engagement sequence planning consideration ..................... 3-16
Figure B-1. Bal Chatri 2 ................................................................................................................. B-1
Figure B-2. Drone Buster ............................................................................................................... B-2
Figure B-3. Modi ............................................................................................................................ B-3
Figure B-4. Smart Shooter ............................................................................................................. B-3

TablesTable 1-1. UAS Groups.................................................................................................................. 1-2
Table 1-2. Advantages and limitations by UAV type ..................................................................... 1-4
Table 3-1. Example counter- unmanned aircraft system detection report (SALUTE format) ...... 3-11
Table 3-2. Aiming Points .............................................................................................................. 3-14
Table A-1. C-UAS training resources ............................................................................................ A-1

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Preface
ATP 3-01.81 provides brigades and below actions and considerations for conducting local security andcounterreconnaissance to deny enemy unmanned aircraft systems from accomplishing their mission. This
includes a description of threat unmanned aircraft systems, how to plan for them at brigade and below,
defensive and offensive actions for Soldiers and units to take, resources for additional training, and example
counter-unmanned aircraft system equipment a unit may be issued or can request.
ATP 3-01.81 is applicable to all members of the Army profession: leaders, Soldiers, and Army Civilians. The
principal audience is brigade and below commanders and staff, junior leaders at the company, platoon, andsquad level. This manual provides the foundation for counter-unmanned aircraft systems, training and Armyeducation system curricula and future capabilities development across doctrine, organization, training,materiel, leadership and education, personnel, facilities, and policy (known as DOTMLPF-P).
To comprehend the doctrine contained in ATP 3-01.81, readers must first understand their militaryoccupational specialty doctrine along with the fundamentals of the offense and defense and the language oftactics described in FM 3-90. They must be familiar with ATP 3-01.8 as well.
Commanders, staffs, and subordinates ensure that their decisions and actions comply with applicable UnitedStates, international, and in some cases, host-nation laws and regulations, and all applicable international
treaties and agreements. Commanders at all levels ensure that their Soldiers operate in accordance with thelaw of war and applicable rules of engagement. (See FM 6-27 for more information on the law of war.) They
also adhere to the Army Ethic as described in ADP 6-22.
ATP 3-01.81 uses joint terms where applicable. Selected joint and Army terms and definitions appear in both
the glossary and the text. ATP 3-01.81 does not prescribe any proponent terms within this publication. For
definitions shown in the text, the term is italicized, and the number of the proponent publication follows thedefinition.
ATP 3-01.81 applies to the Active Army, Army National Guard, and United States Army Reserve unlessotherwise stated.
The proponent of ATP 3-01.81 is the Commanding General, United States Army Fires Center of Excellenceand Fort Sill. The preparing agency is the Directorate of Training and Doctrine, Air Defense Artillery Branch.
Send written comments and recommendations on a DA form 2028 (Recommended Changes to Publication
and Blank Forms) to Directorate of Training and Doctrine, 700 McNair Avenue, Suite 128 ATTN: ATSFDD, Fort Sill, OK 73503; by email to usarmy.sill.fcoe.mbx.dotd-doctrine-inbox@army.mil; or submit anelectronic DA Form 2028.

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Introduction
ATP 3-01.81 establishes how the Army prevents threat unmanned aircraft systems (UASs) from impacting
Army operations. Threat UASs are a condition of the modern battlefield that must be accounted for by leadersand Soldiers at every echelon. Countering unmanned aircraft systems is not a stand-alone effort or the sole
responsibility of any warfighting function or branch. Counter-unmanned aircraft system (C-UAS) is part oflocal security and counterreconnaissance missions that is the responsibility of every Soldier and unit. C-UAS
is not just when unmanned aircraft vehicles are flying, but also takes place “left of launch” and is part of thepredictive analysis that intelligence sections do as part of their threat analysis and is incorporated into thetargeting process.
Every echelon contributes to Soldier survivability by creating a layered defense. This layered defense is acombination of active and passive measures that prevents threat UASs from detecting, targeting, or
destroying its intended target. Every action taken at each echelon makes the threat UAS harder to employ byincreasing its risk and range it travels to accomplish its mission.
Enemy UAS is not a unique threat. The actions Soldiers take to counter-unmanned aircraft systems are notvery different than actions taken to counter any other air threat such as an enemy helicopter or aircraft. While
there are many systems at division and above dedicated to counter enemy air threats, each echelon works toensure that every Soldier—no matter where they are on the battlefield, has the necessary information andability to detect, identify, decide, and if needed to engage any air threat.
ATP 3-01.81 contains three chapters and two appendices:
Chapter 1 provides an overview of threat unmanned aviation systems.
Chapter 2 provides C-UAS planning considerations for brigades and below.
Chapter 3 provides defensive measures for units to take.
Chapter 4 provides offensive measures for units to take.
Appendix A provides C-UAS training resources that can be used while at home station.
Appendix B describes current counter unmanned aircraft systems equipment.

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Chapter 1

Threat Unmanned Aircraft Systems
Countering unmanned aircraft systems requires an understanding of how threats use
unmanned aircraft systems and capabilities against U.S. Forces, allies, and partners.
The focus of this chapter is to understand current threat unmanned aircraft systems’
characteristics and capabilities.

INTRODUCTION
1-1. United States forces, allies, and partners face the proliferation of unmanned aircraft systems (UASs)
as adversaries seek to take advantage of relatively inexpensive, flexible, and expendable systems while
exploiting inherent difficulties with attribution and its implications for deterrence. Commanders at all levels
face the challenge of being able to counter the air threat and adversarial reconnaissance within theiroperational environment. Countering air threats in general, and UAS threats specifically, is a shared joint andcombined arms responsibility. Commanders and staffs must be prepared to address these across the entire
competition continuum.
1-2. UASs come in a variety of sizes and capabilities. Some larger UASs can have a similar lethality to
cruise missiles and can launch from a wide array of locations. Smaller UASs can not only launch virtually
undetected, but with their low radar and sound profiles are also difficult to detect as they maneuver acrossthe battlefield, making them an increasingly preferred method to carry out tactical-level strikes. To
understand the threat better, there is a need to understand the different missions, UAS groups, UAS
components, and a few additional considerations.

UAS MISSIONS
1-3. Advancement in unmanned technologies provides the threat additional means to accomplish their
mission. As UAS technology and capability grows its military employment will also expand. A UAS may
conduct several different missions separately or simultaneously while on one flight. Currently there are six
different missions that UASs conduct: Intelligence, surveillance, and reconnaissance. UASs can provide adversaries with contemporary
intelligence, surveillance, and reconnaissance capabilities in near real time via a video downlink.
 Situational awareness. UASs can provide an aerial view for the threat to know “what is around ahill” and allow the enemy commander to adjust operational orders based on real-time intelligence.
 Communications relay. UASs can serve to extend the communications between ground forces inan otherwise degraded or limited communications environment.
 Weapon delivery. UASs have been used to either deliver ordnance to a target or the UAS itself
can become a loitering munition. This includes chemical and radiological attacks.
 Fire support. UASs can be used to provide forward observer functionality that can enableadjustment of indirect fire.
 Psychological warfare. UASs seen as a weapon delivery platform or conducting intelligence,
surveillance, or reconnaissance prior to an attack can cause panic by their presence alone.

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Chapter 1

Note. A loitering munition is a type of UAS designed to engage beyond line-of-sight groundtargets with an explosive warhead. Loitering munitions are often portable and meant to provide
ground units such as infantry with a guided precision munition. They are equipped with highresolution electro-optical and infrared cameras that enable the controller to locate, surveil, andguide the vehicle to the target. A defining characteristic of loitering munitions is the ability to"loiter" in an area of airspace for an extended period before striking, giving the controller time todecide when and what to strike.

UAS GROUPS
1-4. UASs are categorized into Groups 1 through Group 5, this designation is based on weight, operating
altitude, and speed. The bigger the platform the more robust its suite of capabilities. While group designations
help in understanding UASs and their capabilities, it is important that leaders understand the lines ofdifferentiation between different groups operationally are not rigid. See table 1-1 for a brief description of
the UAS Groups.
Table 1-1. UAS Groups
Group

Group 1:
micro/
mini UAS

Group 2:small
tactical

Weight(lbs)

0 - 20

Speed
(kts)

<100

21 - 55

NormalOperating
Altitudes (ft)

Notes

Threat &COTS
ExamplesFriendly
Examples< 1,200 AGL

Generally, handlaunched commercialoff-the-shelf, radiocontrolled platforms. The
have limited ranges andsmall payload
capabilities. They offer
real time video.
Operated within line ofsight of the user They
offer real time video.
Operated within line ofsight of the user

DJI
MAVIC,
Enterprise
Dual

RQ-11 Raven< 3,500 AGL

Small airframes with low
radar cross sections
provide medium range
and endurance.
Launched from
unimproved areas with asmall number of people
involved. Requires lineof sight to the groundcontrol station.

SKY-09Ps

Scan Eagle< FL 180

Similar to Group 1 and 2
UAS, requires a larger
logistical footprint.
Range and endurance
varies significantly
among platforms.

ShahedRQ-7B Shadow

101 250

Group 3:tactical

1-2

56 –
1,320

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Threat Unmanned Aircraft Systems

Table 1-1. UAS Groups (cont.)
Weight
(lbs)

Group

Group 4:
Strategicor theaterGroup 5:Strategic

AGL
COTS
DJI
FL

> 1,320> 1,320

Speed
(kts)

Any
speed

Any
speed

above ground levelcommercial-off-the-shelf
Da-Jiang Innovations
flight level

NormalOperating
Altitudes (ft)

Notes

Threat &COTS
ExamplesFriendly
Examples< FL 180

Relatively large
systems operated at
medium to highaltitudes. This grouphas extended range
and endurance
capabilities. Normallyrequires a runway forlaunch and recovery.

Forpost

MQ-1C Gray
Eagle
MQ-1A/B
Predator> FL 180

Operates at medium tohigh altitudes having
the greatest range,
endurance, andairspeed. Requires
large logistical footprint
like that of manned
aircraft and has a suiteof optics for targeting
and weaponry forengagements

Wing
Loong II

RQ-4 Global
Hawk
MQ-9 Reaper

ft
Kts
lbs
MQ

feet
knots
poundsAmerican military drone

RQ
UAS

Reconnaissance unmanned aircraft system
unmanned aircraft system

Note. UAS Groups 1 and 2 are commonly known as small-unmanned aircraft systems (sUASs).
A sUAS has a lower radar cross-section than group 3, 4, and 5 UASs. Integrated air and missile
defense (AMD) capabilities can effectively counter larger classes (group 3, 4, and 5). AMD assets
have difficulty tracking, identifying, and defeating sUASs. The low radar cross-section is harderto detect by friendly forces' early warning and detection capabilities. Launch and recovery
requirements allow sUASs launching capability from unimproved areas by a single person or smallteam, making them more difficult to find. Advances in technological capabilities enable theemploy of sUAS with little to no operator interaction.

UAS COMPONENTS
1-5. A UAS is composed of everything required to operate an unmanned aircraft vehicle (UAV). The UAV
is the actual device that flies. UAS includes the personnel, UAV, payload (sensors or weapons), control
station, communication links, launch system, and recovery system. Different echelons and capabilities focus
on defeating different parts of the system. Targeting cells should focus on the three main components: theUAV, the controller, and the communication links. When a UAV is in use, there are potentially up to four
different communication links in action:
 L1 channel Global Positioning System (GPS) downlink. The UAV may rely on a commercial GPS(L1 channel), or a different navigations system such as BeiDou signal for stabilization. The GPS
down link is needed to establish which way is up or down and its altitude. It is required if the UAS
needs to fly to a specific point if a command and control signal is not being utilized. Advanced
UAVs have inertial navigation system back-ups that don’t rely on communication with the groundcontrol station.
 Video downlink. A passive electronic activity that can’t be used to detect the ground control
station or UAV. It can be intercepted, disrupted, and exploited.
 Telemetry downlink. The controller uses a radio frequency to monitor various flight information
about the UAV in real time such as position, altitude, heading, and speed.

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Chapter 1Command and control uplink. A controller is required to operate most UASs. The command andcontrol uplink signal can be used to geo-locate the actual operator of the UAS. See figure 1-1 forvisual representation of the different communication links for a UAS.

Figure 1-1. UAS communication links
1-6. Each component has its own weakness. The UAV is vulnerable to electronic and lethal fires. The
control station is vulnerable to link protocols and lethal fires. The different communications links can be
exploited to geo-locate the UAV, control station, or the tactical operation center.

UAV TYPES
1-7. UAVs are divided into three common types: fixed-wing, rotary-wing/multirotor, and balloons. See
Table 1-2 for examples of some advantages and limitations for each type.
Table 1-2. Advantages and limitations by UAV type
Type

Fixed-wing

Advantages• Increased flight time.
• Generally low audible signature.
• Carry larger payloads.

• Needs room for takeoff and landing.
• Must constantly move forward, notable to hover.

• Greater speed.

1-4Limitations• May have increased operational andsustainment requirements.

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Threat Unmanned Aircraft Systems

Table 1-2. Advantages and limitation by UAV type (cont.)
Type

Rotary-wing /multirotor

Advantages• Vertical take-off and landing capable,
which means they can make off fromalmost anywhere.

Limitations• Low load carrying capacity.
• Limited speed.

• Ability to hover and stare capability.
• Requires little training.
• Low cost easy to acquire and conceal.

Balloon• Long duration.

• Limited ability to maneuver.

• Able to operate at high altitudes.

• Needs room for takeoff and landing.

• High load carrying capacity.

1-8. UAVs may be powered by either electric motors (quiet) or internal combustion engines (larger soundsignature). UAVs carry a payload which is tailored to the mission the UAV is conducting. A UAV’s payload
may be equipped with one or more of the following types of sensors or weapons: Electro-optical or infra-red optics.
 Radar systems.
 Signal collecting and defeating devices.
 Laser designation devices.
 Electromagnetic detection devices.
 Electromagnetic attack devices.
 Electromagnetic jamming devices.
 Air-to-surface weapons.
 Explosives to create a loitering munition.

ADDITIONAL CONSIDERATIONS
1-9. Units should always assume the enemy is using a UAS to observe or attempt to observe them. Modern,friendly, and allied sensors—which include a host of robust long-range and short-range radars, opticaldevices, and audible alert systems—face challenges detecting the UAS Groups 1, 2, and 3 at sufficient ranges.
Because of this, threat UASs may go undetected while operating at a standoff range. This limits friendly
ability to detect them and creates smaller engagement windows.
1-10. Threat UASs have limitations. Poor weather conditions can short-circuit them or prevent their sensors
from collecting. High winds can prevent them from flying at all. Some commercial UAS emit electronic datathat if collected can reveal its operator’s location. Weather conditions like heavy fog or cloud cover candegrade their intelligence collection capabilities.

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Chapter 2

Planning
This chapter covers the basic planning considerations done at brigade and below when
specifically dealing with counter unmanned aircraft systems.

PLANNING CONSIDERATIONS
2-1. Planning is the first step toward effectively countering UAS threats. Neutralizing the UAS threat
requires a combined arms approach that employs capabilities from all the warfighting functions. Effectiveplanning synchronizes activities across echelons and warfighting functions to ensure complementary andredundant capabilities.
2-2. Planning considerations are part of a coherent planning structure that includes—
 Layered approach.
 Rules of engagement.
 Airspace control.
 Air defense warning condition.
 Weapon control status.
 Early warning network.
 Prioritized protection list (PPL).

LAYERED APPROACH
2-3. A layered defense provides multiple engagement opportunities, ideally beginning at the maximum
range from friendly forces and areas, and before any attacking UAS can release their weapons. A layered
defense normally includes support by necessary space, surface, and airborne early warning, detection andtracking assets.
2-4. The airspace control plan and area air defense plan should include detailed procedures for threat UAS
detection, identification, decisions, and engagement. With the proliferation of friendly joint and multinational
UASs, many of which do not have identify-friend-from-foe (known as IFF) capability and are similar or
identical to threat UASs, the airspace control plan and special instructions should include specific procedural
control and coordination measures for control and deconfliction of friendly UAS.
2-5. The seven air defense artillery employment tenets support layered defense against UASs. They aremutual support, overlapping fires and overlapping coverage, balanced fires, weighted coverage, early
engagement, defense in depth, and resilience. The tenets are described briefly in the following: Mutual support. C-UAS capabilities are positioned so that tracking or engagement with one system
can engage targets within dead zones of adjacent systems. When planning around dead zones,
consider altitude and atmospherics for electromagnetic warfare capabilities. Mutual support canalso cover nonoperational systems or systems at a lower state of readiness.
 Overlapping fires and overlapping coverage. C-UAS capabilities are positioned so that their
engagement envelopes overlap. Because of the variety of altitudes, ranges, and speed from which
threat air can attack or observe friendly operations, leaders ensure C-UAS capabilities overlap
both vertically and horizontally. Overlapping coverage also ensures that C-UAS sensors are
positioned so that their coverage does not leave any seam in the defense that might be used bythreat UASs to ingress.

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Chapter 2











Balanced fires. C-UAS weapons are positioned to deliver an equal volume of fires in all directions.
This is necessary for C-UASs in an area where the terrain does not canalize the threat or when theavenues of approach are unpredictable.
Weighted coverage. C-UAS capabilities are combined and concentrated toward the most likely
threat air avenues of approach or direction of attack. Threat UAS avenues of approach may be
unpredictable, so weighted coverage may focus instead on critical assets. Weighted coverage andbalanced fires are not mutually achievable and requires leaders to decide and accept risk.
Early engagement. C-UAS capabilities are positioned so they can engage the threat before
ordnance release or friendly target acquisition. Early engagements enable destruction of enemy
platforms over enemy forces and unoccupied areas, thereby reducing the possibility of friendly
collateral damage and fratricide. As with weighted coverage, early engagement is achieved at theexpense of balanced fires.
Defense in depth. C-UAS capabilities are positioned so that the threat is exposed to a continuously
increasing number of effects as it approaches the friendly protected asset or force. Defense indepth decreases the probability that attacking UASs will reach the defended asset or force.
Resilience. Resilience is the quality of the defense to maintain continuity of operations regardlessof changes in tactics by the enemy or loss of C-UAS capabilities. Leaders understand thecapabilities of their C-UAS equipment and plan for agility to quickly reallocate capabilities as
required, and redundancy so that if any C-UAS capability becomes non-operational, there are stillmeans to prevent threat UAS from accomplishing its mission.

RULES OF ENGAGEMENT
2-6. Commanders have the responsibility to take whatever action is necessary to protect their forces andequipment against attack and ensure their Soldiers operate in accordance with established rules ofengagement (ROE). A unit can push engagement authority of threat UAVs lower, but they balance the risksof a quicker response with the potential for UAV fratricide.

AIRSPACE CONTROL
2-7. Divisions and brigades distribute the airspace coordination order (known as ACO), the unit airspaceplan, and the current air picture via command and control systems that subordinate units have access to. This
includes systems such as the command post computing environment (known as CPCE) or the joint battlecommand-platform (JBC-P). Not all brigades and battalions have access to tactical airspace integration
system (known as TAIS) which is the command and control system that manages the air picture, forward
area air defense command and control (known as FAADC2), or air and missile defense early warning systems(known as AMDWS). Subordinate units without air defense and air management (ADAM) cells, and accessto these systems, are not capable of maintaining awareness of the current friendly air picture rely on thoseechelons with those systems to share and create products they can use.

AIR DEFENSE WARNING CONDITIONS
2-8. Air defense warning (ADW) condition is an air defense warning given in the form of a color code
corresponding to the degree of air threat probability. Warning conditions are a procedural control used toprepare units based on the assessed threat. Different conditions can be provided for different air threats.
Subordinate commanders may issue higher, but not lower, conditions for their assigned area. Leaders ensurethat every Soldier knows the current ADWs.
2-9. There are three types of ADWs: red, yellow, and white, with red being the most urgent. Descriptionsof the ADWs are as follows: ADW red. An attack by hostile aircraft or missile is imminent or in progress.
 ADW yellow. An attack by hostile aircraft or missile is probable.
 ADW white. An attack by hostile aircraft or missile is improbable.

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Planning

WEAPONS CONTROL STATUS
2-10. Weapon control status is a control measure that establishes the conditions under which air defense
weapons (including small arms and crew served weapons) are permitted to engage threats. Weapon control
statuses can apply to weapon systems, volumes of airspace, or types of air platforms. The tactical situation
normally determines the degree or extent of control necessary over particular weapon systems. The brigade
AMD cell either establishes separate weapon control statuses for various air threats, including fixed androtary-wing aircraft, and UASs or an overall control status for any threat air engagement. The three weapon
control statuses for C-UASs are—
 Weapons free. Engage any UAS that is not positively identified in accordance with ROE as
friendly. This is the least restrictive weapon control status.
 Weapons tight. Engage only UASs identified as hostile in accordance with ROE.
 Weapons hold. Units may fire only in self-defense or when ordered by proper higher authority.
This is the most restrictive weapon control status.

EARLY WARNING NETWORK
2-11. As part of their counterreconnaissance efforts, all units establish an air threat early warning network.
This network is usually over frequency modulation (known as FM) and is a means of sharing air threat
situational understanding for units without dedicated air defense command and control systems. These
networks alert everyone. Units practice relaying information using this network to reduce the time required
to notify everyone. See paragraphs 3-57 through 3-61 for additional details on establishing and using an early
warning network.

PRIORITIZED PROTECTION LIST
2-12. Army units develop a PPL to prioritize the use of assigned or allocated protection capabilities. The
PPL provides focus on defending critical assets such as command and control nodes or logistics areas as partof the overall protection plan. Critical assets can be people, property, equipment, activities, operations,information, facilities, or materials.
2-13. A brigade’s protection cell uses information derived from the brigade commander’s guidance anddivision’s PPL, during mission analysis to identify critical assets. The brigade’s protection cell uses
criticality, threat vulnerability, and threat probability to prioritize identified critical assets. Once theprotection working group determines which assets are critical for mission success, it recommends protection
priorities and establishes the brigade’s PPL. It is continuously assessed and revised throughout each phase or
major activity of an operation.

PLANNING CAPABILITIES AND CONSIDERATIONS BY ECHELON
2-14. Brigade and higher headquarters are responsible for the integration of C-UAS into the militarydecision-making process and into the targeting, intelligence preparation of the battlefield (IPB), andprotection processes. In addition, the ADAM and brigade aviation element (BAE) cells assist in managing
the airspace and air defense weapon systems’ employment. The C-UASs fight requires a multi-echelon
approach, synchronizing resources of higher echelons to support mitigation of the UASs threat. Brigade andlower echelons execute protection and survivability activities to mitigate UAS threats on their positions andconduct engagement of immediate UAS threats.
2-15. Every echelon has and employs different air defense capabilities. Divisions and above analyze andplan to mitigate the UAS threat. They direct C-UAS capabilities to enhance survivability of subordinate
friendly forces and critical assets. These assets may be pushed to a brigade to provide overlapping and mutual
support with a brigade’s organic weapon systems. Divisions also ensure U.S. forces and allies maintain areal-tie common threat air operating picture relevant to the UAS threat. While most brigades do not havededicated air defense capabilities, they do have a dedicated air defense personnel on the brigade staff who
can assist with planning and coordinating air defense activities both with their higher and subordinate
echelons. Battalions do not have as robust of staffs as brigade and depend on brigade’s products and systems

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Chapter 2

to assist their assigned companies. Companies and below have no dedicated staff and account for threat UASs
just like they do with any other form of contact.

BRIGADE PLANNING CONSIDERATIONS
2-16. Brigades establish C-UAS plans to protect friendly forces operating in their assigned area. Brigades
direct positioning of assets, plan sensor coverage, and conduct movement of forces consistent with divisionand corps’ plans and objectives. This includes any changes to priority tasks and security of critical assets.
2-17. Brigade planning considerations should include reporting techniques, positive identification, alert
dissemination, and rules of engagement. Brigade C-UAS planning considerations include, but are not limitedto— Disseminate air defense warning and weapons control status.
 Establish general and local air defense warnings (based on running estimates of the air threat).
 Refine PPL based on intelligence preparation of the battlefield, risk, and commander’s assessment.
 Refine the UAS rules of engagement.
 Determine the identification authority.
 Disseminate and refine division’s engagement authority.
 Coordinate coverage that may extend beyond the brigade’s organic sensor capabilities.
 Coordinate with friendly mission command nodes and airspace users to reduce fratricide.
 Establish notification procedures.
 Create appropriate command or support relationships between arrayed C-UAS capabilities.

Brigade ADAM/BAE Cell
2-18. The brigade ADAM cell along with the BAE cell work together to maximize the combat effectivenessof counter-air systems and minimize the risk of friendly fire incidents and collateral damage. To do this theytake the following actions: Manage, develop, and implement a C-UAS layered defense plan by—
 Planning the employment of C-UAS equipment, sensors, and capabilities.
 Understanding how best to use the various C-UAS systems.
 Understanding how C-UAS capabilities affect friendly operations.
 Developing and disseminating the brigade’s airspace plan (Annex C, Appendix 10).
 Creating standard operating procedures for friendly air actions and how to respond to threatair.
 Developing and refining counter-air tactics, techniques, and procedures tailored to theestimated threat environment.
 Integrate friendly C-UAS capabilities into the brigade common operational picture.
 Coordinate with the intelligence section to develop the enemy air situational template (known asa SITEMP).
 Implementing higher headquarters’ C-UAS ROEs, rules for use of force, and special instructions(known as SPINS).
 Recommending unit ROEs, rules for use of force, and special instructions (known as SPINS) tothe brigade commander.
 Implement and adhere to required host-nation policies and procedures for C-UAS.
 Assess the effectiveness of the C-UAS layered defense after a C-UAS engagement, adjusting asnecessary, and providing feedback via lessons learned to both higher echelons and subordinate
units.
Note. The ADAM capabilities resident in a combat aviation brigade and maneuver enhancement
brigade do not have an aviation operations component and therefore have a very limited capability
to perform BAE functions.

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Brigade C-UAS Running Estimate
2-19. The brigade ADAM/BAE cell maintain a C-UAS running estimate. The estimate includes, but is not
limited to— Location and status of all brigade C-UAS assets.
 Capabilities of available C-UAS equipment.
 Enemy UAS activity—past, current, and anticipated.

BATTALION PLANNING CONSIDERATIONS
2-20. Battalions integrate brigade guidance to form a coherent scheme of protection. For a battalion toeffectively respond to an unknown UAV, it needs to have situational awareness of any friendly aircraft intheir assigned area. Battalions shape their C-UAS planning and actions through— Integrating and disseminating unit airspace plan from Annex C, Appendix 10, to maintainawareness of friendly manned and unmanned aircraft to facilitate C-UAS identification andminimize fratricide.
 Integrating attack guidance, targeting processes, and reporting requirements from Annex D toassist in the targeting process.
 Integrating and adhering to air defense coordinating instructions, and ROE guidance such as ADW
and WCS from Annex D, Appendix 7. This also informs proper employment or assigned,
allocated, or attached air defense and C-UAS assets and capabilities.
 Determining the best array of assigned, attached, and allocated C-UAS capabilities to provide alayered defense for the battalion.
 Integrating and understanding brigade’s collection efforts and reporting requirements from AnnexL.
2-21. The battalion intelligence section as part of IPB creates products that assist the battalion in developing
their concept of protection, which includes a threat assessment. A threat assessment includes, but is not
limited to— Possible threat UAS groups operating in battalion area of operations.
 Capabilities of threat UASs.
 Number of threat UASs expected in area of operations.
 UAS employment techniques.
 Potential launch and recovery sites.
 Probable payload capabilities.
 Threat UAS flight profiles.
 Sensor coordination with brigade.
2-22. The battalion develops their concept of protection, which incorporates C-UAS actions based on
intelligence estimates and analysis. The concept of protection focuses assets, resources, and expertise toeffectively mitigate UAS and other threats. Additional instructions for the companies are included undercoordinating instructions; this includes guidance such as threat UAS reporting procedures, weapon control
status, and threat UAS engagement criteria. The battalion staff ensures that all subordinate unit C-UAS battle
drills are nested with the battalion concept of protection.

COMPANY AND BELOW PLANNING CONSIDERATIONS
2-23. Companies and below take the concept of protection developed at battalion and implement it. Theirmain focus during troop leading procedures is to focus on reacting to air contact battle drills. Leaders at
company and below conduct rehearsals and examine their unit’s active and passive measures. Rehearsals will
check things such as air guard locations, assigned sectors, UAS reporting procedures, communication plans,
ADW status, weapon control status, engagement criteria, and threat UAS identification.

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Chapter 3

Defensive C-UAS Actions
This chapter covers the passive measures units take to avoid detection from threat
UAVs and the active measures to take once a UAV is detected.

OVERVIEW
3-1. Once a threat UAV is in the air, a unit focuses on survivability. Survivability is a quality or capabilityof military forces which permits them to avoid or withstand hostile actions or environmental conditions while
retaining the ability to fulfill their primary mission (ATP 3-37.34). It represents the degree to which aformation is hard to kill. Survivability is relative to a unit's capabilities and the type of enemy effects it mustwithstand, its ability to avoid detection, and how well it can deceive enemy forces. Survivability is also afunction of how a formation conducts itself during operations.
3-2. Leaders assess survivability as the ability of a friendly force to withstand enemy effects whileremaining mission capable. Armor protection, mobility, tactical skill, avoiding predictability, and situationalawareness contribute to survivability. Enforcement of overhead security techniques and avoiding detection
while initiating contact on favorable terms also increases survivability.
3-3. Contact with unidentified UAVs may be a precursor to an imminent attack. All units who were in the
UAV’s path should assume they were observed and prepare for indirect fire on their positions. All units mustreact quickly, respond appropriately, and report when recognizing signs of possible enemy observation or
attack. Whether a dedicated C-UAS or counter-air capability is available or not, units implement passive andactive defensive measures to nullify or reduce the effectiveness of enemy UAV operations. Passive measures
are all measures taken to prevent threat UAVs from detecting and targeting friendly forces and assets. Active
measures are actions taken to detect, identification, decide, and potentially engage UAVs by lethal and nonlethal means.

PASSIVE MEASURES
3-4. Passive measures improve survivability by reducing the likelihood of detection and targeting offriendly assets and mitigating the potential effects of an air attack. Passive air defense measures are the firstline of defense against air threats. While this book is focused on C-UASs, these measures can apply for all
counter-air operations. All units employ passive defense measures to protect themselves from detection,observation, and attack. These measures include— Camouflage and concealment.
 Deception.
 Dispersion.
 Displacement.
 Hardening and protective construction.

CAMOUFLAGE AND CONCEALMENT
3-5. The more closely a target resembles its background, the more difficult it is for threat UAVs todistinguish between the two. Adhering to this fundamental principle of camouflage and concealment requires
awareness of the surroundings, proper camouflage and concealment skills, and the ability to identify threat
electromagnetic sensors.

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3-6. When existing concealment is insufficient, military forces can alter the physical environment toprovide or improve concealment for personnel and physical assets. Similarly, they can employ camouflage
to confuse, mislead, or evade the enemy. Camouflage and concealment prevent observation. Units apply
camouflage to prevent detection both horizontally and vertically.
3-7. Target acquisition can be accomplished by a variety of sensors that operate throughout theelectromagnetic spectrum. This poses a challenge to camouflage and concealment planning andemployment—determining which enemy sensors the camouflage and concealment activities should defeat.
Unfortunately, no single answer is correct for all situations. Leaders without specific guidance from theirhigher echelon assess their tactical situation and plan camouflage and concealment activities accordingly. If
intelligence data indicate that an enemy UAV uses visual sensors, then visual countermeasures are employed.
For infrared or radar sensors, countermeasures that are effective in those spectra are employed. If amultispectral or hyperspectral threat is anticipated, camouflage and concealment activities are conducted toprotect a unit in its most vulnerable electromagnetic bandwidths. Very few available camouflage materials
or techniques provide complete broadband protection.
3-8. Sometimes it is easier to remove the source of a signal instead of trying to camouflage it. For example,
there are readily and cheaply available sensors capable of detecting Wi-Fi or Bluetooth signals off of a “smart
device”. When operating in a non-urban environment where there are not a lot of other civilian signals tomask that signature, leaders should weigh the benefit of the smart device with the risk of detection, and ifthat risk is too high, have Soldiers turn off and remove those smart devices.

Threat Sensor Systems
3-9. The most plentiful, reliable, and timely enemy sensors are visual. Therefore, effective camouflage andconcealment techniques in the visual portion of the electromagnetic spectrum are extremely important.
Something that cannot be seen is often difficult to detect, identify, and target. Field uniforms, standard
camouflage screening paint patterns, ultra-lightweight camouflage-net system (ULCANS), and battlefieldobscurants provide effective camouflage and concealment against visual sensors. Full-coverage camouflage
and concealment (to include vertical camouflage) help to avoid visual detection by the enemy. When time isshort, apply camouflage and concealment first to protect from the most likely direction of attack—then treat
the remainder as time allows.
3-10. Near-infrared sights are effective at shorter ranges. While red filters help preserve night vision, theycannot prevent near-infrared sensors from detecting light from long distances. Therefore, careful light
discipline is an important countermeasure to near-infrared sensors and visual sensors (such as image
intensifiers). Standard camouflage screening paint patterns, battlefield obscurants, and certain uniforms aredesigned to help defeat near-infrared sensors.
3-11. Natural materials and terrain shield heat sources from infrared sensors and break up the shape of cold
and warm military targets viewed on infrared sensors. Do not raise vehicle hoods to break windshield glare
because this exposes a hot spot for infrared detection. Even if the infrared system can locate a target, theidentity of the target can still be disguised. Avoid building fires and using vehicle heaters. Infrared-defeating
obscurants, chemical-resistant paints, and certain uniforms are designed to help break up infrared signatures,
but they do not defeat infrared sensors.
3-12. Enemy use of ultraviolet sensors poses a significant threat in snow-covered areas. Winter paintpatterns, the arctic-style lightweight camouflage screen system (known as LCSS), and terrain masking are
critical means for defending against these sensors. Any kind of smoke defeats ultraviolet sensors. Fieldexpedient countermeasures, such as constructing snow walls, also provide a means of defeating ultraviolet
sensors.
3-13. To defeat these various sensors, units need to— Minimize movement. Movement attracts enemy attention and produces several signatures (tracks,noise, hot spots, dust). In operations that inherently involve movement (such as offensive tasks),
leaders plan and manage movement so that signatures are reduced as much as possible. If
movement must be done, slow, regular movement is usually less obvious than fast, erratic
movement.

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

Avoid operational patterns. An enemy can often detect and identify different types of units oroperations by analyzing the signature patterns that accompany their activities. For example, anoffensive is usually preceded by the forward movement of engineer obstacle reduction assets;
petroleum oils, and lubricants; and ammunition. Such movements are very difficult to conceal;
therefore, as an alternative, the pattern of resupply can be modified. An enemy recognizes
repetitive use of the same camouflage and concealment techniques.

3-14. To camouflage effectively from aerial observation, units consider the threat viewpoint. Prevent patterns
in anti-detection countermeasures by applying the following recognition factors to tactical situations. These
factors describe a target’s contrast with its background.
Reflectance
3-15. Reflectance is the amount of energy returned from a target’s surface compared to the energy striking
the surface. Reflectance is generally described in the following three ways, according to the part of theelectromagnetic spectrum in which the reflection occurs: Visual reflectance. Visual reflectance is characterized by the color of a target. Color contrast canbe important, particularly at close ranges and in homogeneous background environments, such as
snow or desert terrain. The longer the range, the less important color becomes. At very long ranges,
colors tend to merge into a uniform tone. Also, the human eye cannot discriminate color in poor
light.
 Temperature reflectance. Temperature reflectance is the thermal energy reflected by a target(except when the thermal energy of a target is self-generated, as in the case of a hot engine).
Infrared imaging sensors measure and detect differences in temperature-reflectance levels (known
as thermal contrast).
 Radar-signal reflectance. Radar-signal reflectance is the part of the incoming radio waves that isreflected by a target. Radar sensors detect differences in a target’s reflected radar return and thatof the background. Since metal is an efficient radio-wave reflector and metals are still an integral
part of military equipment, radar return is an important reflectance factor.
Shape
3-16. Unnatural shapes stand out in nature. Natural background is random, and most military equipment has
regular features with hard, angular lines. Even an erected camouflage net takes on a shape with straight-line
edges or smooth curves between support points. An enemy can easily see silhouetted targets, and its sensors
can detect targets against any background unless their shape is disguised or disrupted. Size, which is
implicitly related to shape, can also distinguish a target from its background.
3-17. Some equipment such as radar arrays can’t be covered by camouflage nets since it interferes with its
operations. Camouflage nets can be used to cover most of the equipment and only have the operational faceof the radar exposed. The net needs to help break up the straight lines of the radar or anything it is covering.
3-18. ULCANS is the standard Army camouflage net. ULCANS reduces a vehicle’s visual, near-infrared,
and radar signatures. ULCANS are only effective if there is at least 2 feet of space between the ULCANS
and the camouflaged equipment and if the completely covers the equipment. There are different colors andthere is a radar-transparent model that can also be used. Leaders and Soldiers need to ensure to keep track of
the radar-transparent and the radar-scattering ULCANS versions so as not to impede their own radar
antennas.
Shadow
3-19. Shadows need to be accounted for when camouflaging. Shadows can be divided into two types:
 Cast shadow. A cast shadow is a silhouette of an object projected against its background. It is themore familiar type of shadow and can be highly conspicuous. In desert environments, a shadow
cast by a target can be more conspicuous than the target itself.
 Contained shadow. A contained shadow is the dark pool that forms in a permanently shaded area.
Examples are the shadows under the track guards of an armored fighting vehicle, inside a slit

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trench, inside an open cupola, or under a vehicle. Contained shadows show up much darker thantheir surroundings and are easily detected by an enemy.
Texture3-20. A rough surface appears darker than a smooth surface, even if both surfaces are the same color. For
example, vehicle tracks change the texture of the ground by leaving clearly visible track marks. This isparticularly true in undisturbed or homogeneous environments, such as a desert or virgin snow, where vehicle
tracks are highly detectable. In extreme cases, the texture of glass or other very smooth surfaces causes ashine that acts as a beacon. Under normal conditions, very smooth surfaces stand out from the background.
Therefore, eliminating shine is a high priority in camouflage and concealment.
Patterns
3-21. Rows of vehicles and stacks of supplies create equipment patterns that are easier to detect than random
patterns of dispersed equipment. Equipment patterns should be managed to use the surroundings for vehicle
and equipment dispersal. However, equipment dispersal should not be implemented in such a way that it
reduces the unit ability to accomplish a mission.
3-22. Equipment paint patterns often differ considerably from background patterns. The critical relationshipsthat determine the contrast between a piece of equipment and its background are the distance between theobserver and the equipment and the distance between the equipment and its background. Because these
distances usually vary, it is difficult to paint equipment with a pattern that always allows it to blend with its
background. As such, no single pattern is prescribed for all situations. Field observations provide the best
match between equipment and background.
3-23. The overall terrain pattern and the signatures produced by military activity on the terrain are important
recognition factors. If the unit is to remain unnoticed, it matches the signatures produced by stationary
equipment, trucks, and other activities with the terrain pattern. Careful attention is also paid to vehicle tracks
and their effect on the local terrain during unit ingress, occupation, and egress.

Camouflage and Concealment Discipline
3-24. Camouflage and concealment discipline avoids activities that change the appearance of an area or
reveal the presence of military equipment. Camouflage and concealment discipline is a continuous necessitythat applies to every Soldier. If the prescribed visual and audio routines of camouflage and concealment
discipline are not observed, the entire camouflage and concealment effort may fail. Vehicle tracks, spoil, anddebris are the most common signs of military activity. Their presence can negate efforts of proper placement
and concealment. Units and personnel continually reassess and improve their camouflage and concealment.
3-25. Camouflage and concealment discipline denies an enemy the indications of unit location or activities
by minimizing disturbances to a target area. To help maintain unit viability, a unit integrates all available
camouflage and concealment means into a cohesive plan. Camouflage and concealment discipline involves
regulating light, heat, noise, spoil, trash, and movement. Successful camouflage and concealment discipline
depends largely on the actions of individual personnel. Some of these actions may not be easy on a Soldier,but failure to observe camouflage and concealment discipline could defeat the camouflage and concealment
efforts of an entire unit and possibly impact unit survivability and mission success.
3-26. Standard operating procedures that prescribe camouflage and concealment procedures aid in enforcing
camouflage and concealment discipline, and they should—
 List specific responsibilities for enforcing established camouflage and concealment
countermeasures and discipline.
 Detail procedures for individual and unit conduct in assembly areas or other situations that may
apply to the specific unit.
3-27. Successful units have frequent camouflage and concealment battle drills. Camouflage and concealment
discipline is a continuous requirement that calls for strong leadership, which produces a disciplined
camouflage and concealment consciousness throughout the entire unit.

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Light and Heat Discipline
3-28. Though always important, light and heat discipline is crucial at night. As long as visual observation
remains a primary reconnaissance method, concealing light signatures remains an important camouflage andconcealment countermeasure. Lights not blacked out at night can be observed at great distances. For example,
the human eye can detect campfires from a distance of 8 kilometers (4.97 miles) and vehicle lights from 20
kilometers (12.43 miles). Threat surveillance can also be used to detect heat from engines, stoves, and heatersfrom great distances. When moving at night, vehicles in the forward combat area should use ground guides
and blackout lights. When the use of heat sources is unavoidable, use terrain masking, exhaust baffling, andother techniques to minimize thermal signatures of fires and stoves.
Spoil
3-29. The prompt and complete policing of debris and spoil is an essential camouflage and concealment
consideration. Proper spoil discipline removes a key signature of a unit’s current or past presence in an area.
Track
3-30. Vehicle tracks are clearly visible from the air, particularly in selected terrain. Therefore, track andmovement discipline is essential. Use existing roads and tracks as much as possible. When using new paths,
ensure that they fit into the existing terrain pattern. Units minimize, plan, and coordinate movement; and takefull advantage of cover and dead space.

Camouflage and Concealment Techniques
3-31. There are five general techniques of employing camouflage and concealment. They are hiding,blending, disguising, disrupting, and decoying.
3-32. The hiding technique screens a target from enemy sensors. The target is undetected because a barrierhides it from a sensor’s view. Every effort should be made to hide all operations; this includes using
conditions of limited visibility for movement and terrain masking. Examples of hiding include— Placing vehicles beneath tree canopies.
 Placing equipment in defilade positions.
 Covering vehicles and equipment with nets.
 Hiding roads and obstacles with linear screens.
 Using battlefield obscurants, such as smoke.
3-33. The blending technique alters target appearance so that it appears to become a part of the background.
Generally, it involves arranging or applying camouflage material on, over, and/or around a target to reduce
its contrast with the background. Characteristics to consider when blending include the terrain patterns in thevicinity and the target size, shape, texture, color, EM signature, and background.
3-34. The disguising technique applies materials on a target to mislead the enemy as to its true identity.
Disguising changes a target appearance so that it resembles something of lesser or greater significance. For
example, a missile launcher might be disguised to resemble a cargo truck, or a large building might be
disguised to resemble two small buildings.
3-35. The disrupting technique alters or eliminates regular patterns and target characteristics. Disrupting
techniques include pattern painting, deploying camouflage nets over selected portions of a target, and using
shape disrupters (such as camouflage sails) to eliminate regular target patterns.
3-36. The decoying technique deploys a false or simulated target within a target scene or in a position where
the enemy might conclude that it has found the correct target. Decoys generally draw fire away from realtargets. Depending on their fidelity and deployment, decoys greatly enhance survivability.

DECEPTION
3-37. Except for a few select types, preconstructed decoys are not widely available. A typical Army unit canconstruct effective, realistic decoys to replicate key equipment and features through imaginative planning

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and working knowledge of the electromagnetic signatures emitted by the unit. Units use decoys to set up
false locations, to draw attention away from an operation, or to confuse threat collection activities which canconceal unit activities from enemy detection.
3-38. The proper use of decoys provides alternate targets against which an enemy expends ammunition,
possibly revealing its position in the process. Decoys also enhance friendly survivability and deceive anenemy about the number and location of friendly weapons, troops, and equipment.
3-39. Decoys are used to attract enemy attention for a variety of tactical purposes. Their main use is to draw
enemy fire away from critical assets. Their design depends on several factors, such as the target to be decoyed,a unit’s tactical situation, available resources, and the time available to a unit for camouflage and concealment
employment. Decoys are generally expendable, and they can be elaborate or simple.
3-40. Proper decoy employment serves a number of tactical purposes, including— Increasing the survivability of key unit equipment and personnel.
 Deceiving the enemy about the strength, disposition, and intentions of friendly forces.
 Drawing enemy fire, which reveals its positions.
 Encouraging the enemy to expend munitions on relatively low-value targets (decoys).
3-41. The two most important factors regarding decoy employment are—
 Location. Logically placing decoys greatly enhances their plausibility. Decoys are usually placednear enough to the real target to convince an enemy that it has found the target. However, a decoy
must be far enough away to prevent collateral damage to the real target when the decoy draws
enemy fire. Proper spacing between a decoy and a target depends on the size of the target, theexpected enemy target-acquisition sensors, and the type of munitions directed against the target.
 Fidelity (realism). Decoys are constructed according to a friendly unit standard operatingprocedure and include target features that an enemy recognizes. The most effective decoys arethose that closely resemble the real target in terms of both shape and electromagnetic signatures.
Completely replicating the signatures of some targets, particularly large and complex targets, canbe very difficult. Therefore, decoy construction should address the electromagnetic spectral regionin which the real target is most vulnerable. When evaluating decoy fidelity, the decoy should berecognizable in the same ways as the real target, only more so. Try to make the decoy slightly
more conspicuous than the real target. For example, enhance the realism of a decoy command postby having it send and receive fake electronic traffic. Use a ULCANS to only partially cover the
decoy command post, thus making it a more conspicuous target than the real command post.

DISPERSION
3-42. Dispersion is the spreading or separating of troops, material, establishments, or activities which areusually concentrated in limited areas to reduce vulnerability (JP 5-0). To increase their survivability units
disperse personnel and capabilities to the maximum extent possible. Leaders at all levels balance the degreeof dispersion with other factors such as their ability to command and control forces and provide mutual
support to adjacent units.
3-43. Friendly forces use dispersion to degrade or deny the enemy’s ability to effectively locate, target, andengage friendly forces. While all the mission variables impact the degree of a unit's dispersion at any given
time, terrain is usually a key determining factor in how much a unit can disperse. Generally, the more open
the terrain, such as deserts or farmland, the more a unit disperses to increase its survivability against aerial
threats. Conversely, in terrain such as heavily wooded areas or urban centers, a unit may decrease dispersion
due to the availability of overhead concealment provided by vegetation or buildings to increase their overhead
security.
3-44. Dispersion is applicable to stationary and moving forces. Stationary forces combine dispersion withother survivability techniques, such as camouflage and concealment, and hardening facilities to increase theirsurvivability. Moving forces maintain dispersion during movement, maneuver, and halts. Dispersion isparticularly important when executing movement in canalizing terrain such as along roads or trails. During
halts units maintain and may even increase their dispersion. Whenever possible units halt in areas where theterrain provides concealment.

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3-45. If friendly forces are detected and engaged by enemy forces, dispersion lessens target density andreduces the lethal effects of any enemy weapon system. Area weapon system become less effective whenunits are dispersed.

DISPLACEMENT
3-46. If friendly assets are observed or an attack begins, units can displace to an alternate location to prevent
additional attacks or to render the current attack ineffective. Ideally, a displacement is conducted without
degrading the performance of a unit’s primary objective. During the planning process unit’s will account for
the employment of enemy UAS and its known capabilities. Based on the assessment of the UAS’s
capabilities, the unit commander identifies displacement criteria and the actions to take if the criteria are met.
This can range from repositioning from a primary position to an alternate position to a full withdrawal.

HARDENING AND PROTECTIVE CONSTRUCTION
3-47. While hardened facilities are specifically reinforced for protection against direct and indirect fire, theconcept extends to include additional protection of key assets from explosive and nonexplosive hazards. For
aerial threats this focuses on overhead cover that is thick enough to withstand enemy artillery fire or any
ordnance an enemy UAV could drop, such as grenades or mortar rounds.
3-48. This could be as simple as adding layers of sandbags, or pieces of steel on top of existing buildings orvehicles. It could also be as complex as purposefully constructing a shelter or bunker with specific materials
such as concrete and steel to protect against indirect fire and aerial attacks. Care should be taken to balance
the increased survivability that overhead cover provides with the effect it has on the vehicle or structure as
not all are rated to have that additional weight and could fail.
3-49. While hardening can apply to both vehicles or building, protective construction is limited to fixed sites
and is typically done by engineers. Soldiers can do some protective construction on their own such as fillingsandbags or collecting Class IV materials, or using found objects like logs, rocks, or large amounts of earth.
Engineers can assist with protective construction and need to be given a priority of work.
Note. A technique to check the effectiveness of your passive measures, if time and capabilities areavailable, is to have friendly UAS or air assets try to detect a friendly force’s position.

ACTIVE MEASURES
3-50. Active defense measures are a multi-step sequence that units and Soldiers do to detect, identify, decide,and potentially engage an unknown UAS. The quicker these steps can be applied, the more effective theresponse against threat UAS.

DETECT
3-51. UAS are small, maneuverable, and quiet. Even to the trained eye they are often very difficult to observein flight. Environmental conditions can make such systems difficult to detect without the use of special
technological tracking and identification devices. Time of day, ambient light levels, meteorologicalconditions, and observer alertness will all impact on the ability to observe a potential hostile UAS. Moreover,an experienced operator can fly a UAS in a tactical manner as such to further enhance the ability to exploit
UAS characteristics. This may include— Flying at low level, using terrain, obstacles with vertical extent and/or urban environment to mask
an approach to a potential target location.
 Making a series of false take-offs and approaches to intended target location.
 Use of erratic, dynamic flight profiles to confuse and deceive personnel, making visual observation
challenging.
 Using the sun or cloud cover to effectively mask the UAS from sight.
 Flying upwind approaches to minimize the ability to detect the sound of the UAS.

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Chapter 3Use of sport flying modes to increase speed and agility and minimize the time to observe the UAS.
Use of multiple UAS to confuse, deceive, and overwhelm observers and make tracking leading to
defeat more difficult.
Flying a pre-programmed flight profile to minimize risk to the operator, allowing for the link to
be disconnected in flight from the control station and re-established over the target area fromanother position.

3-52. The types of sensors and their placement determine the unit’s detection capability. Threat UAS types,
threat axis of advance, terrain, weather, time-distance analysis, friendly defended assets, desired engagementzone, surveillance requirements, and the number of available assets impact how best to place and employ
sensors. For sensor placement, integrating and networking sensors to develop the enemy threat UAS situation
should be applied. The use of various types of sensors is warranted as currently there is no one type of sensor
that is 100% effective.
3-53. Various sensor capabilities outside of visual (observer) could include RADAR, radio frequency,
audible, and optical devices. The goal is to form an integrated sensor network that includes various sensor
types. Sensor capabilities in support of low-level air threats are planned accordingly and coordinated inadvance. Leaders may have to coordinate through higher echelons for additional sensor capabilities. No
matter what sensor capabilities a unit has, all soldiers need to be aware of the air threats and constantly lookup before and during any movements. Dedicated air guards are another way units can assist in air threat
detection and engagement.

Air Guards
3-54. Air guards need to be vigilant with eyes on the horizon. Air guards are responsible for spotting aerial
threats within proximity to the unit's location and to provide early warning by alerting the unit of possible air
threats. Sector limits cover likely avenues of approach for threat aircraft. Air guards can be used duringmounted and dismounted offensive and defensive operations.
3-55. If equipped with C-UAS assets, air guards can engage in accordance with ROE and weapon control
status. Soldiers serving as air guard should establish positions within visual ranges of the unit (between 500
meters and 1.5 kilometers). This should allow the air guard to see, hear, and report potential threats.
3-56. Air guards should have the ability to conduct operations under all conditions. They should be equippedwith the necessary optical gear to perform search and scan techniques to reduce the enemy’s ability to evadedetection.
3-57. When scanning for UAS, do not limit the search too near the horizon and miss higher-flying aircraftor search too high above the horizon and miss lower flying targets. The correct limit of search is 20 degrees
above and below the horizon. A Soldier’s arm fully outstretched arm with fingers fully extended isapproximately 20 degrees. See figure 3-1 for an example of this method.

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Figure 3-1. A method of estimating 20 degrees
3-58. The vertical scan is the technique used to optimize a Soldier’s vision for finding air threats. By using
upward eye movements toward the sky, then downward to the horizon and continuing across the terrain the
air guard should scan using the same pattern to approximately 20 degrees above and below the horizon toaccount for all air threats. Figure 3-2 on page 3-10, shows the vertical scan and figure 3-3 on page 3-10,
shows the horizontal scan.

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Figure 3-2. Vertical scan method
3-59. The horizontal scan is viewed from the horizon, the air guard should search using eye movements
across the sky while working upward to approximately 20 degrees. As in vertical scanning, the air guard
should continue the search and scan technique to 20 degrees below the horizon to detect low flying air threats.
Figure 3-3 shows the horizontal scan.

Figure 3-3. Horizontal scan method

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Air Guard Checklist
3-60. Before assuming duty as an air guard, leaders perform precombat inspection to ensure the designated
air guard has the correct equipment and has been briefed on the current threat. The air guard checklist
includes, but is not limited to— Understanding on types and characteristics of threat UAS.
 Understanding of current UAS trends.
 Specific data on local air threats and named areas of interest.
 Detection equipment (such as binoculars, night vision devices, thermal weapon sights).
 C-UAS equipment available.
 Secure radio operations and frequencies to send out early warning.
 Unit call signs to request support.
 Military map of area.
 Orientation techniques (location, heading, speed, and line-of-sight).
 Range card.

Warning3-61. Once an air threat is detected, all friendly forces need to be quickly warned. This can happen by two
methods—a top-down approach, or a bottom-up approach. Small UAVs are typically detected by forward
units first, so rehearsing the use of the unit early warning net and rehearsals from the bottom-up are critical.
No matter which approach is used, the information is passed using the SALUTE report format. Receipt of
this report should trigger additional follow-on actions for all units. These follow-on actions could be for units
to freeze in place or engage with lethal or non-lethal means. When possible, units detecting air threats alert
adjacent units. Table 3-1 shows some additional information to collect on unknown UAS and to include in a
SALUTE report.
Table 3-1. Example counter- unmanned aircraft system detection report (SALUTE format)
Line

Information

Example1

Size

Report the number of UASs (unmanned aircraft systems), or size of theformation.

2

Activity

Report detailed account of actions:
What is the UAS’s direction of movement?
Was there any hostile action?
Is the threat UAS loitering in one spot?
Is it flying straight?
Was the threat UAS approach observed or was it spotted overhead?

3

Location

Report where you saw the activity.
Include 6 to 8- digit grid coordinate of reporting element and either grid or
distance and direction from reporting element location (known point).

4

Unit

Include details such as—• Fixed-wing or rotor/multi-rotor.

(Description of
UAS)• If fixed wing—• Estimated length of wingspan.
• Tail configuration.
• If rotor/multi-rotor—• Number of rotors.
• Height.
• Payload, sensors, and weapons.
• Any lights.
• Other distinguishable markings.

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Table 3-1. Example counter-unmanned aircraft system detection report (SALUTE format)(cont.)Line

Information

Example5

Time

Report the time the activity was observed.

6

Equipment

If possible, report all equipment associated with the UAS, such as payload or
weapons.

UAS

unmanned aircraft system

Top-down Approach
3-62. At brigade and above, AMD cells provide threat identification and site alarming by disseminating early
warning both digitally and by voice to all their subordinate units. Digitally, this is done automatically fromthe staff planning and battlespace situational awareness tool (currently AMDWs) through the JBC-P. Since
not every digital system works appropriately, or is being monitored, units also use voice communication.
3-63. The brigade AMD cell uses frequency modulation (known as FM) radio and transmits a flash message
that a threat UAS is observed in the area of operations over the brigade operations and intelligence net.
Battalions quickly transmit this over their operations and intelligence net. Companies then transmit this overthe company net. Platoons transmit this over their platoon internal nets, and if appropriate over the necessary
squad communications systems to ensure that all personnel are aware. This process takes time, so the quicker
these flash messages are relayed, the quicker the force can take appropriate action.
Bottom-up Approach
3-64. When any observer detects an air threat, they begin the process in reverse. They use their local platoon
net to pass their flash message, it is then relayed to the company net, which is then relayed to the battalion
operations and intelligence net, and then relayed to the brigade operations net. There the brigade AMD cell
inputs the necessary information into the appropriate system to ensure early warning across the entire
formation. The first echelon with a battlefield situational awareness tool (such as the JBC-P) creates a digital
warning to assist in quickly warning the entire formation.
3-65. No matter how a Soldier is alerted, upon receiving the air threat warning, their first reaction is to freeze.
The threat can detect movement. After a quick assessment that they are not currently being observed, they
move to cover and concealment and await the all clear report before resuming their current mission.

Track
3-66. Simultaneous with providing warning, friendly forces track the target and monitor the target's
movement. Keeping track of the target needs to occur until a decision is made to engage or not engage thetarget and is successful. A location is a static estimated report or display of where an air threat is located at agiven moment. A system track is a compilation of location reports over a period of time. Depending on thesystem employed the system track can be reported as a heat map display, quadrant alert, or a circle to indicate
estimated center and location error or line of bearing. The detection plan contributes directly to the unit’s
ability to track airborne objects continuously and efficiently.

IDENTIFY
3-67. Identification is the process of determining the friendly or hostile characteristics of an unknown
detected contact. The employment of C-UAS capabilities requires early identification of UAS to maximize
engagement times and avoid fratricide. The problem of distinguishing friendly, neutral, and hostile aerial
objects while employing various weapon systems against threat UAS is a highly complex task. The same
UAS may be flown by both friendly and enemy forces. Accurate identification allows leaders to makeengagement decisions and enhances situational awareness. Timely identification improves weapons
employment options, helps conserve friendly resources, and reduces the risk of friendly fire.
3-68. There are two methods of identification, procedural and positive. Positive identification is the preferred
method of operation, but generally, some combination of positive and procedural identification is used.
Procedural identification separates airspace users by geography, altitude, heading, time, and maneuver.

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Positive identification is an identification derived from observation and analysis of target characteristics
including visual recognition, electronic support systems, non-cooperative target recognition techniques,
identification friend or fore systems, or other physics-based identification techniques (JP 3-01).
3-69. Identification of a UAS should lead to a specific name or category or the exact make and model of the
UAS. Identification of its payload is also important if it can be determined. The process of assigning an
identification to a track likely will depend on several criteria. Characteristics that assist in identifying an
unknown UAV include identifying: If fixed wing— Estimated length of wingspan.
 Tail configuration.
 If rotor/multi-rotor—
 Number of rotors.
 Height.
 Estimated size.
 Payload, both sensors and weapons.

DECIDE
3-70. Decide is actually two decisions. First, whether there is a need to engage. Second if the decision to
engage is made, the methods used to lessen or eliminate the threat posed by a UAS. These methods include
physical and nonphysical. Some organizations will be equipped with cyber capabilities which include both
physical and nonphysical methods. The degree of delegation is consistent with the rules of engagement, theavailable airspace, potential for collateral damage, and the inherent right of self-defense.
3-71. Physical methods engage with and either destroy or damage the device so that it is not operational.
Examples of physical methods include, but are not limited to— Explosive munitions.
 Small arms.
 Projectiles.
 Entanglement.
 Streamers.
 Spray foam.
 Directed Energy.
 Laser.
 High-power microwaves.
 Capture.
 Nets.
Small Arms Defense Techniques
3-72. Small arms techniques used in air defense incorporate the use of volume fire and proper aiming points
according to the target's direction. If Soldiers are trained to apply an appropriate sequence of engagement
techniques for UASs based on the rules for selecting aiming points, the response will be automatic uponcommand. Small arms are limited to the range and destructive capability of the weapon and should be used
only on low flying UASs.
3-73. The decision to fire small arms against threat UASs is the unit commander's and is based on thesituation. Considerations should at a minimum include the severity of the threat versus the potential impactof the unit's effectiveness and the area of engagement (urban versus rural).
Volume Fire
3-74. Volume fire is an effective method to employ when using small arms fire against aerial threats. The
key to success in engaging enemy aircraft with small arms is to put out a high volume of fire towards the

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immediate threat. The more bullets a unit can put in the sky, the greater the chance the enemy will fly into
them. Even if these fires do not hit the enemy, throwing up a "wall of lead" in the sky can intimidate threat
UAS pilots, ultimately breaking off their attack or distracting them from taking proper aim. One of the mostimportant points about volume fire is that once the lead distance is estimated, you must aim at the estimatedaiming point and fire at that single point until the aircraft has flown past that point. Maintain the aiming point,
not the lead distance. Once you start firing, do not adjust your weapon.
3-75. When the decision is made to engage an aircraft with small arms, every weapon (M4, M240, M249,
and M2) should be used with the goal of placing as many bullets as possible in the enemy's flight path. That
does not mean that everyone fires in some random direction. Instead, everyone selects an aiming point infront of the target and fires at that point. This aiming point is determined using the football field technique.
When deciding to fire upon an enemy UAS, practical considerations need to be taken into account before
engaging. An example is engaging a UAS from a range of 3 kilometers. It is important to consider thecapabilities of the available weapons. Using small arms at this range is ineffective while the best possibility
may be the use of the main gun on a tank or tracked vehicle. Small arms have a low probability of kill against
attacking UAS due to their size, speed, and maneuverability.
Football Field Technique
3-76. The football field technique is a simple method of estimating lead distance. The theory is that mostpeople have played or watched football and have a concept of how long a football field is. When told to leadthe target by one football field, everyone aims at approximately the same point in space. One person's error
in making the football field estimate will be offset by another person's error. The variation in aiming points
will ensure that massed fire is delivered into a volume of space in front of the target rather than on a small
point. Also, the differing perspectives from which the Soldiers view the target will act to further distributethe fire over a volume of space.
Aiming Points
3-77. Aiming points used to engage threat UAVs are different but may be used on a variety of different
threats. An example of this technique would apply if enemy helicopters were detected and the decision wasmade to engage it should be engaged as a group 5 rotary wing UAV. The rules for selecting aiming points
are simple, easily learned, and retained. The various aiming points are summarized in table 3-2.
Table 3-2. Aiming Points
UAV Type

CourseAiming Point

Group 1 UAS

Crossing

0.5 football fields in frontGroup 2 UAS

Crossing

1 football field in frontGroup 3 - 5 UAS

Crossing

2 football fields in front

All UAS

Directly at you

Slightly above the UAV body

Rotary wing

Hovering

Slightly above the UAV body

UAS

unmanned aircraft system

UAV

unmanned aircraft vehicle

Firing Position Techniques For Small Arms
3-78. Except for the prone position, the firing positions used in rifle marksmanship are the same firing
positions used to counter threat UAS with small arms. Firing at UAVs when lying down means theindividuals are lying on their backs (supine), aiming their rifles into the air. If you are in an individual fighting
position, stay there and return fire from the supported standing position. If you are not in an individual firing
position, you should look for a tree, a large rock, or supportive object to help stabilize the weapon and provide
protection. Use the following firing positions accordingly: You can use all the basic firing positions for air defense except the prone position. Instead, use thereverse position; lie on your back (supine) and point your weapon upward.

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

Always take cover when available. If you are in an individual fighting position, stay there. Assume
a supported standing position and return fire. The bipod on the M249 and M240 machine guns
assists you in firing your weapon more effectively at hostile aerial platforms.
If cover and concealment are good, use the high-kneeling position. If cover and concealment areless substantial, use the low kneeling position.

3-79. When using the M240 machine gun, the gunner will also fire from a protected position if possible. He
needs to get the weapon up in the air. The gunner can hold it up or use some support such as a tree limb. In
an emergency, another Soldier can act as a hasty firing support.
Engaging With Machine Guns
3-80. The machine gun is effective against slow-moving UAVs. To sustain the volume of fire and kill atarget, a continuous burst of 20-to-25 rounds fired using a tracer on target method, allowing the gunner toadjust rounds on target.
3-81. Vehicle's machine guns are useful weapons against UAVs. They can be fired quickly unleashing ahigh-volume of fire. Ensure that the area is clear of friendly personnel. Use the following guidelines whenusing crew served weapons: When targets are hovering or inbound, aim high with the machine gun and fire a continuous burst,
adjusting onto target by observing the travel and impact of tracers remembering, tracers may
appear to be striking the target when they are actually going under it.
 If engaging a moving target, track along its flight path using a lead of 50 meters or half a football
field. Fire a continuous burst, forcing the target to fly through the cone of fire.
3-82. When coordinated effectively, the aircraft will fly through the unit's cone of fire. Vehicle commanders
must not try to track high-speed aircraft because they fly too fast. When enemy aircraft fly directly at vehicles,
vehicle commanders are responsible for engaging them with controlled machine gun bursts of 50-to-100
rounds. Select an aiming point slightly above the nose to position the UAV in the cone of fire.
3-83. Because of the speed of some types of UAVs, the best technique to use against them is to fire all
automatic weapons in continuous bursts. If the UAVs are inbound, aim slightly above the nose or fuselage
and fire. If the UAV is crossing, use a lead of 200 meters (two football fields) and fire letting the UAV fly
through the cone of fire from the machine guns. Do not try to track or traverse your fire for group 3 and above
UAVs since they fly too fast.
3-84. Nonphysical methods defeat the device by disrupting, blocking, or controlling the signal between the
UAV’s optical, flight control, and ground control station. Even though nonphysical methods are used on the
UAV, these methods may still cause it to crash and cause collateral damage. Examples of nonphysicalmethods include, but are not limited to— Radio frequency jamming.
 GPS jamming.
 GPS spoofing.
 Dazzling.
 Position, navigation, and timing (known as PNT) jamming.

DEFEAT
3-85. Defeat techniques begin once airspace deconfliction and target engagement authority has been passed
down to the tactical level. To confirm the identity of the sUAS and prevent fratricide multiple processes andprocedures. Depending on the engagement method, area RF deconfliction may be required. Depending on
the frequencies, there may be opportunities where operational RF spectrums overlap with the control
frequency of the sUAS. Key leaders must determine and mitigate frequency fratricide during defeat measures.
Defeat measures can follow non-lethal or lethal procedures. During non-lethal responses, it is crucial tocontinue jamming, until the UAS is inoperable. After lethal or non-lethal responses, and once the UAS has
shown no control-link, explosive ordnance disposal must be requested to render the UAS safe. Once the UAS
is safe, the UAS may submit for weapons intelligence and analysis. see figure 3-3 on page 3-16, C-sUAS
Time/Distance Engagement Sequence Planning Considerations.
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Figure 3-3. CsUAS time/distance engagement sequence planning consideration

Engage3-86. Once a decision is made to engage and with what capability, the determined capability engages. Other
capabilities continue to track in case the target was missed, and they can engage or re-engage as necessary.

Exploit3-87. Exploitation plays a key role in the development of UAS countermeasures. Effort should be made tocollect downed UAS systems and their components. When Soldiers encounter a downed UAS, and the current
situation allows it, they will use their optics from a safe distance to look for indicators or presence of
suspicious items (is it carrying explosives, does it look modified, or is there any other type of explosive
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payload?). If possible, they conduct a check of the immediate area for potentially dropped payloads oradditional grounded UAVs. If Soldiers determine no explosive hazards exist, they will collect up as much of
the UAV as they can and expediate its movement to their higher echelon for exploitation.
3-88. If an explosive hazard is suspected, mark and report the UAV for action by explosive ordnance disposal
or other trained personnel once operational conditions allow. Units will mark the hazard with engineer tape,
VS-17 panel, or any other high visibility durable material that allows the explosive ordnance disposal team
to identify the hazard's location from 50 to 100 meters. The location of the item should be marked on theunits' situational awareness system (such as JBC-P) or Joint Capabilities Release (known as JCR) with a tendigit grid. Units request explosive ordnance disposal through their chain of command using the necessary
reports.

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Chapter 4

Offensive C-UAS Actions
This chapter covers how units can offensively find and target unmanned aircraft
systems before or after the UAV takes flight.

OVERVIEW
4-1. The best time to defeat a threat UAS is while the UAV is on the ground. By attacking parts of thesystem, like the ground control station, it prevents the launch or recovery of a UAV. Each echelon uses IPB
to determine the UAS threats in its assigned area, information collection to find threat UAS, and the targeting
process to allocate resources and defeat the threat UAS.

INTELLIGENCE PREPARATION OF THE BATTLEFIELD
4-2. IPB, as part of the air defense approach, supports force protection planning by identifying threat UAS
capabilities and likely employment concepts, strategies, and tactics. It is a continuous four step process ofdefine the operational environment, describe the environmental effects, evaluate the threat, and determine
the threat course of action, as outlined in paragraphs 4-3 through 4-7.
4-3. The first step is to define the operational environment. No additional considerations are required for
C-UAS.
4-4. The second, iterative, step is to describe the environmental effects. This step evaluates theenvironment’s effect on both adversary UAS operations and friendly C-UAS operations. Units analyze theterrain focusing on ground and air avenues of approach and likely enemy defensive positions. Larger UAS
require open areas or hard surfaces to use as runways while smaller UAS used by lower echelon forces may
be employed in the vicinity of defensive battle positions to provide early warning. For C-UAS anelectromagnetic spectrum template can be used to assist in determining potential threat air avenues ofapproach. The electromagnetic interference template should take into account all electromagnetic emitters toinclude: Radars.
 Radios.
 Jammers.
 GPS.
4-5. Terrain and weather analyses are inseparable. The weather assessments needed to support C-UAS
operations are climatology, current weather, and forecast weather. Every enemy and friendly weapon system
has operational limitations associated with weather conditions.
4-6. The third step is to evaluate the threat. This step examines in detail the capabilities and limitations ofevery UAS the threat is assessed to possess, and how the threat will organize for combat and conduct
operations with those platforms under normal conditions. The results of the threat evaluation are portrayedin appropriate threat models and graphical representations of the threat’s UAS capabilities and limitations.
The creation of an unmanned aircraft system template is done and works to answer the following information
requirements:
 Duration of UAV flight. How long can the UAV operate before needing to refuel or return to its
launch and recovery asset? Can this be used to determine likely launch and recovery points? Also
known as endurance.

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

















Flight trajectories. How does the UAV get from launch point to the operating area? Can data suchas trajectories, speeds, path, and behavior, be utilized to assist in the classification andidentification of the UAS threat?
Threat UAV counter measures. Does the threat UAV carry any countermeasures?
Number of UAS platforms. How many UAS are in the enemy inventory?
Launch platform(s). How many launch platforms does the enemy have? Are there any sharedplatforms? Can this information be used to develop a defense against the UAS threat and to
calculate threat COAs?
Threat UAS radar homing capability. What frequency bands are the threat UAS capable oftargeting? How many threat UAS have this capability? How will the threat use this capability?
Maximum UAS sortie generation. How may UAS be used simultaneously? What is the rate oflaunch for subsequent UAS employment? How long can the adversary sustain continuous UAS
operations?
UAV loiter time. How long will a threat UAV wait to accomplish its mission?
UAV guidance. How is the UAV guided? Does it require a line of sight or a beyond line of sightconnection to a control station? Does the UAV rely on GPS, waypoints, terrain comparison orother methods to guide it to its intended mission area? Is there a way that this guidance can beinterrupted or inhibited?
UAV speed. What are the speeds the threat UAVs can travel at? How does this effect C-UAS
ability to detect, identify, decide, and engage?
UAV altitude. What are the assessed altitudes that the threat UAV can or will travel at? How will
this effect C-UAS ability to detect, identify, decide, and engage?
UAV range. What is the maximum and minimum range of the threat UAS? Do any of these ranges
allow for the removal of a UAS platform as a viable threat?
UAS launch platform. Identify any launch limitation that can be used to refine the launch platform
or launch area.
UAV recovery. How is the UAV recovered? How long does it take to refuel and refit and be putback into action?

4-7. The final step in the IPB process is to determine the threat course of action. This step integrates theresults of the previous steps into meaningful conclusions. At a minimum, this step creates a threat mostdangerous course of action, and a most likely course of action. These courses of actions are developed bycreating event templates and matrices focused on threat UAS actions independently, or in support of a larger
threat action.

INFORMATION COLLECTION
4-8. For offensive C-UAS operations, information collection provides necessary information for effective
targeting. Information collection plans are adjusted to include threat UAS information requirements that weredeveloped during IPB. All the components of the UAS are targeted with the four different informationcollection tasks working to collect on the threat.
4-9. Analysts identify those areas and times where the threat is most likely to employ UASs to achieve theirobjectives through IPB and then task information collection assets to answer priority intelligencerequirements to enable decision making and targeting. This aids in identifying the times and locations when
UASs may be most likely used against friendly forces. As an example, early identification of potential groundcontrol stations or launch sites by reconnaissance assets can lead to their targeting by either lethal or nonlethalmeans before the UAS can be used.

TARGETING
4-10. Offensive C-UAS operations are not a standalone mission but are a supporting effort to any operation.
Effectively targeting threat UASs requires building on the products and knowledge gained during IPB andthe execution of information collection activities during the decide and detect portions of the Army targeting
process. Units align delivery assets to provide lethal and nonlethal means to attack UASs. This targeting can

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include lethal and nonlethal means such as attacking these capabilities and locations with artillery, aerial
fires, or electromagnetic warfare capabilities. Fires planners incorporate enemy UAS capabilities into thehigh payoff target list and attack guidance matrices with the goal of defeating, degrading, delaying,
destroying, diverting, or suppressing threat UASs. Air defense and UAS operations officer involvement intargeting working groups is critical for proper analysis and integration of C-UAS into the targeting cycle.

TARGETING CONSIDERATIONS FOR THREAT UAS COMPONENTS
4-11. What to target and why are always important decisions to make as part of the targeting process since
there are only limited detection and delivery agents available. Paragraphs 4-12 through 4-16 describe various
components of the unmanned aircraft system and the effects that targeting them have on the overall threat
system.

Launch and Recovery Assets
4-12. Large fixed-wing UAVs require an airfield with a paved runway of sufficient length for take-off andlanding. Small to medium-sized fixed wing UAVs have significantly fewer infrastructure requirements andare either launched from a catapult or some other vehicle-mounted system. Large balloons require enoughopen space to get clear of any local obstacles. Rotary wing UAVs don’t need much in terms of launch andrecovery equipment, usually just enough room for the UAV to clear local obstacles. Launch and recovery
equipment is highly vulnerable and successful destruction of launch and recovery equipment, and personnel
will cause the UAV to remain grounded until the equipment is repaired or replaced. It is common practicefor multiple UAVs to use a single set of launch and recovery equipment, so the redundancy of launch andrecovery equipment is less likely, which makes this an important target.

Ground Control Stations
4-13. The ground control station is where the UAV’s pilot and payload operator are physically located andcan be in a variety of locations. The largest impact to their location is whether the UAV requires a line-ofsight connection or beyond line-of-sight connection is needed. The physical destruction of a ground control
station will likely disrupt current operations of all UAVs linked to it if there are no redundant systems inplace. Just like launch and recovery assets, usually multiple UAVs rely on a single ground control station
which makes it a highly valuable target.

Communications Equipment
4-14. Most UAV are dependent on a connection with ground control stations for command and control data
links. The required communication equipment for the UAS operating in line of sight is usually attached to
the ground control station or can be found near its location. As the mode indicates, radio antennas require aline of sight with the UAV, therefore they have to be placed quite openly and on elevated positions, making
them high pay-off targets. UAS operating in beyond line of sight use large satellite ground terminals that are
several meters in diameter. These radars are usually located at a great distance from the forward line of troops
and are less accessible to friendly interdiction. The large satellite dimensions make them vulnerable toidentification by any aerial or space imagery. Even though the destruction of the ground control station andthe communications equipment causes a delay in the mission of the enemy UAS, the threat may recoverquickly with the introduction of redundant ground control station or communications equipment. In thisregard, striking the launch and recovery unit or the actual UAV is a more preferred option.

Logistics and Support Systems
4-15. Although the UAV does not require a crew on board, it is a flying platform, which requires similar
logistics to most manned aircraft. UAS logistical support should cover the required support for all subsystemsof the UAS. The support system depends on many different things, including the type of the UAS, its
operational requirements, and its operational environment. For a small hand-launched UAVs, relatively little
logistical support is required, while larger UASs usually need more logistical support. The destruction of alogistics chain has deep effects and it effects might not be seen in the short-term but cause inevitablechallenges to UAS life cycle management.

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JOINT CONSIDERATIONS
4-16. Countering UASs is not just an U.S. Army responsibility. U.S. Air Force, Navy, and Marine Corps
aviation assets can assist especially against the larger UAS groups by conducting air interdiction. Airinterdiction are air operations to perform interdiction conducted at such distances from friendly forces thatdetailed integration of each air mission with the fire and movement of friendly forces is not required (JP 303). Interdiction is as an action to divert, disrupt, delay, or destroy the enemy’s military surface capability
before it can be used effectively against friendly forces or otherwise be used to achieve enemy objectives (JP3-03). While physical destruction of C-UAS is desired, if the threat perceives that it could be destroyed, it
will achieve a delay and diversion of resources.
4-17. Group 4 and 5 UASs due to their size and range should be on the joint integrated prioritized task list
(known as the JIPTL). Elevated sensors such as the active electronically scanned array (known as AESA)
radar on a F-35 aircraft are a great means of detecting small and low flying UAVs. While this is probably not
the best use of a joint asset, the U.S. Air Force should be able to provide some means of wide-areasurveillance to assist in detecting threat UAVs. Once they are detected, the tracks can be transferred to otherair space management systems and eventually C-UASs for further action. U.S. Army assets such as the
AN/APG-78 Longbow fire control radar on the Apache attack helicopter and various electromagnetic warfare
packages on Grey Eagle UAVs can also assist detecting threat UAS.

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Appendix A

C-UAS Training
This appendix includes resources and some considerations when conducting C-UAS
training.
A-1. C-UAS training can be a stand-alone situational training exercise, but a greater training benefit would
come from incorporating into already planned training. Units should focus on UAS threat capabilities, thedangers that threat UASs may impose on the unit, and associated battle drills once the UAS is detected.
Examples of key tasks to integrate into unit training are—
 Train visual observers how to look for and track UAS.
 Perform visual air threat recognition training.
 Practice various passive measures.
 Establish and use an early warning notification network.
A-2. Leaders leverage specifically designed training aids, devices, simulators, and simulations from theirinstallation’s training support center to enhance collective task training in the defeat and mitigation of CUAS threats. An installation’s range control can also provide guidance on both how to fly UASs and therequirements for different types of engagements. Leaders use video and other data collected from the flown
threat UAS to assess their unit’s ability to conduct both passive and active defensive measures.
A-3. Threat UASs and their employment techniques change faster than doctrine does. Leaders update theirtraining and education with the most current and relevant information based on lessons learned, enemy trends,
and friendly C-UAS tactics, techniques, and procedures. To stay current leaders can use the resources listed
in table A-1 as a starting point.
Table A-1. C-UAS training resources
References

Description

Joint Knowledge Online (JKO) C-sUAS (CounterSmall Unmanned Aircraft Systems) community
page(https://jkodirect.jten.mil/Atlas2/page/desktop/Des
ktopHome.jsf)

A repository of material and links to online training
developed by the Joint C-sUAS Office. To access—• go to the JKO Online portal at:https://jkodirect.jten.mil/;• login using government issued common access card;• go to “Community” on the gray banner at the top of thepage;• select “Joint C-sUAS Office.”

Center for Army Lessons Learned (CALL)(https://call2.army.mil/)

11 August 2023

Repository for Army lessons learned as well as
observations, insights, after action reports, etc.

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Appendix A

Table A-1. C-UAS training resources (cont.)
References

Description

Joint Lessons Learned Information System(JLLIS) (https://www.jllis.mil/apps)

Repository for joint lessons learned as well as observations,insights, after action reports, etc.

Classes

Description

Starting in October 2023, the Joint C-sUAS
University (JCU) at Fires Center of Excellence,
Fort Sill, OK will provide Joint Service personnel(military, civilian, and contractors) training in theareas of C-sUAS system operator, planning, andinstallation protection. Classes start October
2023. Courses are currently listed in the Army
Training Requirements and Resources System(ATRRS) FY24 C-sUAS Master Trainer (Joint
Operator Course), C-sUAS Leader Planner (Joint
Planner Course).

The school currently conducts three classes:• The Joint C-sUAS Operator Course (9ESIU5/ASIU5/920-ASIU5) is non-service/branch/militaryoccupational specialty (MOS)-specific. It is primarily
focused on the operations of the joint C-sUAS Office(JCO) down-select systems. Upon completion of thiscourse, operators will be able to do the following: deterthe UAS threat via passive air defense measures;detect the UAS threat via visual /audible identification
and C-sUAS equipment sets; mitigate the UAS threat
via C-sUAS kinetic/non-kinetic equipment sets andcombined arms for air defense; and report UAS threats
via applicable policies and procedures. Culminateswith a hands-on training exercise incorporating red air.

https://sill-www.army.mil/adaschool/csuas.html• The Joint C-sUAS Planner Course (9ESIU1/ASIU1/920-ASIU1) is non-service/branch/MOS
specific. It is primarily focused on contingency sUAS
threat considerations within the joint planning process
framework. Upon completion of this course, planners
will have experience developing courses of action todeter, detect/identify, report, and mitigate the UAS
threat via integrating the employment of available CsUAS capabilities. Culminates with a planning exercise
incorporating red air.
• Joint Installation Protection Course (current nonATTRS) is designed for Installation Commanders andForce Protection teams (e.g. Anti-Terrorism/Force
Protection Officers, Mission Analyst, Physical Security
Managers). It is a competency-based course: thelearning objectives are based on the requirements for
CONUS/OCNUS Unmanned Aerial Vehicles (UAV)
threat reporting and deterring. The course prepares
Commanders and Force Protection personnel (militaryand civilian) to successfully integrate C-sUAS systems
within existing force protection programs. It introduces
personnel on roles and responsibilities for C-sUAS
management, Federal regulations and reporting
standards, engagement authorities, Environmental
Protection Agency Assessment, and installation CsUAS systems capabilities and limitations. Additionally,
students will develop a 130i reporting package andcomplete a course of action for varied installation
threats from UAVs. Upon completion of the course
individuals will be able to successfully advise
commanders on procedures and requirements for safe
execution against UAV threat.
JCO Policy Training Module

https://intelshare.intelink.gov/sites/JCO/Shared%20Docu
ments/1_JKO%20Policy%20Training%20Module

A-2

Provides instructions for DOD planners and leaders on
policies, authorities, and authorized actions that affect CsUAS and UAS procedures, planning, and operations.

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C-UAS Training

Table A-1. C-UAS training resources (cont.)
Basic C-sUAS Awareness Training(https://jkodirect.jten.mil/html/COI.xhtml?course_p
refix=JCSUAS&course_number=A-US1401)

Provides a basic awareness of general UAS threats, types
and categories of UAS, and basic reporting requirements.
This module is a prerequisite for all other C-sUAS modules
on JKO.

Basic C-sUAS Familiarization Training(https://jkodirect.jten.mil/html/COI.xhtml?course_prefix=J
CSUAS&course_number=A-US1402)

Provides a review of the basic UAS awareness and an
overview of select C-sUAS systems and capabilities.

Basic C-sUAS Installation Training(https://jkodirect.jten.mil/html/COI.xhtml?course_p
refix=JCSUAS&course_number=-US1403)

Provides a threat overview, information on policies andauthorities associated with UAS and counter UAS
operations at installations and fixed sites, planningconsiderations, and reporting procedures.

Basic C-sUAS Tactics, Techniques, andProcedures(https://jkodirect.jten.mil/html/COI.xhtml?course_p
refix=JCSUAS&course_number=-US1404)

Provides an overview of the threat and operational
environment, general tactics, techniques and procedures for
C-sUAS, reporting procedures, and select UAS casestudies.

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Appendix B

Example C-UAS Equipment
This appendix provides a brief overview of potential C-UAS equipment that a unit may
receive or request from their higher headquarters and are currently not programs ofrecord.

BAL CHATRI 2
B-1. The Bal Chatri 2 is a passive radio frequency detection capability used to detect and identify threat
UASs (see figure B-1). The system employs a software defined radio frequency detection system used todetect and identify drones. The radio can be configured for body-worn detection capability or for a small,
fixed site location.
B-2. Bal Chatri is a passive radio frequency detection capability used to detect and identify drones. Key
considerations for this system include: Range: 3-5 kilometers.
 Power source: 1x PRC-148 battery or plug-in.
 Battery life: 4 hours.
 Weight: 2.5 lbs.

Figure B-1. Bal Chatri 2

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Appendix B

DRONE BUSTER
B-3. The Drone Buster provides detect and defeat capability against threat UASs (see figure B-2). It is a
handheld, battery-operated, dismounted, electronic attack device specifically designed to defeat group 1 and
2 UASs. The unit exploits weaknesses in commercial-off-the-shelf drone communication protocols enabling
the operator to jam the control signal forcing the unmanned aircraft to execute pre-programmed "lost signal"
protocols.
B-4. Drone Busters operate strictly by line of sight, and it requires the operator to maintain eyes on thetarget throughout the engagement. If there is loss of line of sight during the engagement, the threat my regain
control of the UAV. Drone Buster is designed to disrupt remote controlled and GPS guided UASs. Key
considerations for this system include: Range: 400m.
 Power source: 1x BB2847 rechargeable battery.
 Battery life: Continuous jamming: approximately 1 hour.
 Continuous detect: approximately 4-6 hours.
 Complete battery discharge: approximately 10 days.
 Weight: 2.5 lbs.

Figure B-2. Drone Buster

MODI
B-5. The Modi is a dismounted, man portable electronic warfare system that enables detect and defeat
capability (see figure B-3). Modi systems provide integrated tactical electronic warfare capabilities to defeat
many UASs. The unit may be employed solely as a dismounted system or, using a mounted power amplifier,may be used in a fixed site or mounted configuration and dismounted when required. It can operate from -4
to 140 degrees Fahrenheit. Key considerations for this system include: Range: 400m.
 Power source: 3x BB2590 batteries.
 Battery life: unknown.
 Weight: 40.25 pounds (dismounted with pack).

B-2

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Example C-UAS Equipment

Figure B-3. Modi

SMART SHOOTER
B-6. The Smart Shooter is a sight that mounts to existing individual weapon systems and enables theoperator to defeat UAS threats (see figure B-4). Smart Shooter is compatible with existing military rifles andcan be mounted on any rail on a weapon system. When the Smart Shooter is employed, it will only fire when
the sight is aligned to hit the target, this includes the required “lead” on a moving target. Key considerations
for this system include: Range: 120m.
 Power source: Rechargeable smart lithium ion battery.
 Battery life: 72 hours or up to 3,600 assisted shots.
 Weight: 2 pounds and 1 ounce.

Figure B-4. Smart Shooter

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Glossary
This glossary contains acronyms and terms used throughout this publication.

SECTION I – ACRONYMS AND ABBREVIATIONS
ADA
ADAM

Air defense artillery
air defense and air management

ADP

Army doctrine publications

ADW

air defense warningAMD

air and missile defense

ATP

Army techniques publication

BAE

brigade aviation element

C-UAS

counter-unmanned aircraft system

C-sUAS

counter-small unmanned aircraft system

DA

Department of the Army

DOD

Department of DefenseFMfield manual

GPS

Global Positioning System

IPB

intelligence preparation of the battlefield

JBC-P
JP
MCTP

joint battle command-platform
joint publication
Marine Corps tactical publication

PPL

prioritized protection list

ROE

rules of engagement

sUAS

small-unmanned aircraft system

UAS

unmanned aircraft system

UAV

unmanned aircraft vehicle

ULCANS

ultra-lightweight camouflage-net system

SECTION II – TERMS
air interdiction
Air operations to perform interdiction conducted at such distances from friendly forces that detailed
integration of each air mission with the fire and movement of friendly forces is not required. (JP 3-03)
dispersion
The spreading or separating of troops, materiel, establishments, or activities, which are usuallyconcentrated in limited areas to reduce vulnerability. (JP 5-0)
interdiction
An action to divert, disrupt, delay, or destroy the enemy’s military surface capability before it can beused effectively against friendly forces or otherwise be used to achieve enemy objectives. (JP 3-03)

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Glossary-1

Glossary

positive identification
An identification derived from observation and analysis of target characteristics including visual
recognition, electronic support systems, non-cooperative target recognition techniques, identification
friend or fore systems, or other physics-based identification techniques. (JP 3-01)
survivability
A quality or capability of military forces which permits them to avoid or withstand hostile actions orenvironmental conditions while retaining the ability to fulfill their primary mission. (ATP 3-37.34)

Glossary-2

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References
All websites accessed on 04 May 2023.

REQUIRED PUBLICATIONS
These sources must be available to intended users of this publication.
FM 1-02.1. Operational Terms. 09 March 2021.
DOD Dictionary of Military and Associated Terms. May 2023.

RELATED PUBLICATIONS
These documents contain relevant supplemental information.

JOINT AND DEPARTMENT OF DEFENSE PUBLICATIONS
Most joint publications are available on the Joint Electronic Library at https://www.jcs.mil/doctrine/.
Most DOD publications are available on the DOD Issuances website at https://www.esd.whs.mil/DD/.
CJCSI 3121.01B. Standing Rules of Engagement/Standing Rules for the Use of Force for U.S. Forces.
13 June 2005.
JP 3-01. Countering Air and Missile Threats. 21 April 2017.
JP 3-03. Joint Interdiction. 26 May 2022.
JP 5-0. Joint Planning. 01 December 2020.
United States Department of Defense. Counter-Small Unmanned Aircraft Systems (C-sUAS) Quick
Reference Guide, Version 2. November 2022.

ARMY PUBLICATIONS
Unless otherwise indicated, most Army doctrinal publications are available on the Army Publishing
Directorate website at https://armypubs.army.mil/.
ADP 3-37. Protection. 31 July 2019.
ADP 5-0. The Operations Process. 31 July 2019.
ADP 6-22. Army Leadership and The Profession. 31 July 2019.
ATP 2-01.3. Intelligence Preparation of the Battlefield. 01 March 2019.
ATP 3-01.8. Techniques for Combined Arms for Air Defense. 29 July 2016.
ATP 3-01.15/MCTP 10-10B/NTTP 3-01.8/AFTTP 3-2.31. Multi-service Tactics, Techniques, andProcedures for Air and Missile Defense. 07 April 2023.
ATP 3-01.50. Air Defense and Airspace Management (ADAM) Cell Operation. 05 April 2013.
ATP 3-37.34/MCTP 3-34C. Survivability Operations. 16 April 2018.
FM 3-01. U.S. Army Air and Missile Defense Operations. 22 December 2020.
FM 3-01.44. Short-Range Air Defense Operations. 21 July 2022.
FM 3-90. Tactics. 01 May 2023.
FM 5-0. Planning and Orders Production. 16 May 2022.
FM 6-0. Commander and Staff Organization and Operations. 16 May 2022.
FM 6-27/MCTP 11-10C. The Commander’s Handbook on the Law of Land Warfare.07 August 2019.

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References-1

References

OTHER PUBLICATIONSWEBSITES
Basic C-sUAS Awareness Training:https://jkodirect.jten.mil/html/COI.xhtml?course_prefix=JCSUAS&course_number=AUS1401.
Basic C-sUAS Familiarization Training:https://jkodirect.jten.mil/html/COI.xhtml?course_prefix=JCSUAS&course_number=AUS1402.
Basic C-sUAS Installation Training:https://jkodirect.jten.mil/html/COI.xhtml?course_prefix=JCSUAS&course_number=US1403.
Basic C-sUAS Tactics, Techniques, and Procedures:https://jkodirect.jten.mil/html/COI.xhtml?course_prefix=JCSUAS&course_number=US1404.
Central Army Registry: https://atiam.train.army.mil.
Center for Army Lessons Learned (CALL): https://call2.army.mil/.
Joint C-sUAS University (JCU): https://sill-www.army.mil/adaschool/csuas.html.
JCO Policy Training Module:
https://intelshare.intelink.gov/sites/JCO/Shared%20Documents/1_JKO%20Policy%20Trainin
g%20Module.
Joint Knowledge Online (JKO) portal: https://jkodirect.jten.mil/.
Joint Knowledge Online (JKO) C-sUAS (Counter-Small Unmanned Aircraft Systems) community
page: https://jkodirect.jten.mil/Atlas2/page/desktop/DesktopHome.js.
Joint Lessons Learned Information System (JLLIS): https://www.jllis.mil/apps.

PRESCRIBED FORMS
This section contains no entries.

REFERENCED FORMS
Unless otherwise indicated, DA forms are available on the Army Publishing Directorate website:
https://armypubs.army.mil/.
DA Form 2028. Recommended Changes to Publications and Blank Forms.

References-2

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Index
Entries are by paragraph numbers.

A
ADAM, 2-7, 2-14, 2-18, 2-19
AMDWS, 2-7, 3-62

D
decoy, 3-40, 3-41

Eelectro-optical, 1-3, 1-7

F
FAAD, 2-7

11 August 2023

G
GPS, 1-5, 3-84, 4-4, 4-6, B-4

Ttexture, 3-20, 3-33

I

U

R

UAV, 1-5, 1-6, 1-7, 1-8, 2-6, 2-20,
3-1, 3-3, 3-7, 3-47, 3-69, 3-77,
3-82, 3-83, 3-84, 3-86, 3-87, 41, 4-6, 4-12, 4-13, 4-14, 4-15,
B-4

IFF, 2-4
ROE, 2-6, 2-10, 2-20, 3-55

S
survivability, 2-14, 2-15, 3-1, 3-2,
3-4, 3-25, 3-36, 3-38, 3-40, 342, 3-43, 3-44, 3-48

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ATP 3-01.81
11 August 2023

By Order of the Secretary of the Army:RANDY A. GEORGE

General, Acting United States Army
Chief of Staff

Official:

MARK F. AVERILL

Administrative Assistantto the Secretary of the Army
2321306

DISTRIBUTION:

Active Army, Army National Guard, and United States Army Reserve. Distributed inelectronic media only (EMO).

PIN: 201565-000