OFFICE OF THE         SECRETARY OF DEFENSE          DEFENSE AGENCIES         DOD FIELD ACTIVITIES

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               **ORGANIZATION               AND FUNCTIONS                GUIDEBOOK**

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**February 2000Updated:  March 2001**

****       This *Guidebook* outlinesthe functions of the *Office of the Secretary of Defense (OSD)*, *Defense Agencies*,and *DoD Field Activities*. Where appropriate, the functional statement cites thepertinent Department of Defense (DoD) Directive which charters the organization andprovides more detailed information on the authorities, responsibilities, and functions ofthe organization. 

       General information on the *MilitaryDepartments*, the *Joint Chiefs of Staff,Unified Combatant Commands*, and the *InspectorGeneral of the DoD* is also provided.  More detailed information may be found inDoD Directives, the United States Government Manual, or by direct contact with theorganizations. DoD personnel may obtain copies from OSD Publications Counter Service, Room3A1037, Pentagon, (703) 695-2167.  All other personnel may obtain copies from OSDPublic Affairs, Room 1E757, Pentagon, (703) 697-5737.

**TABLE OF CONTENTS**

**DEPARTMENTOF DEFENSE**

- Organizational Structure      o    Department    of Defense            o    Secretary of    Defense            o    Deputy    Secretary of Defense            o    Office of the Secretary of Defense            o    Military    Departments           o    The Joint Chiefs of Staff            o    Unified    Combatant Commands            o    Inspector General of the    Department of Defense            o    Defense Agencies            o    DoD Field    Activities 
- DoD Organization Chart 
- Organization Chart of the Military Departments 
- JCS Organization Chart 
- Unified Combatant Commands Chart 

**OFFICE OF THE SECRETARY OF DEFENSE (OSD)**- Organization Chart 
- Organizations and Functions 
- Under Secretary of Defense for Acquisition, Technology and    Logistics            o   Director of Defense Research and Engineering           o   Deputy Under Secretary of Defense (Acquisition and    Technology)           o   Deputy Under Secretary of Defense (Logistics and    Materiel Readiness)           o   Assistant to the Secretary of Defense (Nuclear and    Chemical and                    Biological    Defense Programs)           o   Director of Small and Disadvantaged Business    Utilization            o   Deputy Under Secretary of Defense (Acquisition    Reform)           o   Deputy Under Secretary of Defense (Advanced Systems    and Concepts)           o   Deputy Under Secretary of Defense (Environmental    Security)           o   Deputy Under Secretary of Defense (Industrial    Affairs)            o   Deputy Under Secretary of Defense (Installations)           o   Deputy Under Secretary of Defense (Science and    Technology)
- Under Secretary of Defense (Comptroller)/Chief Financial Officer           o   Principal Deputy Under Secretary of Defense    (Comptroller)           o   Director for Program Analysis and Evaluation
- Under Secretary of Defense for Personnel and Readiness           o   Assistant Secretary of Defense (Force Management    Policy)           o   Assistant Secretary of Defense (Health Affairs)           o   Assistant Secretary of Defense (Reserve Affairs)           o   Deputy Under Secretary of Defense (Readiness)           o   Deputy Under Secretary of Defense (Program    Integration)           o   Deputy Under Secretary of Defense (Planning)
- Under Secretary of Defense for Policy           o   Principal Deputy Under Secretary of Defense    (Policy)           o   Assistant Secretary of Defense (International    Security Affairs)           o   Assistant Secretary of Defense (Strategy and Threat    Reduction)           o   Assistant Secretary of Defense (Special Operations    and Low-Intensity Conflict)           o   Deputy Under Secretary of Defense (Policy Support)           o   Deputy Under Secretary of Defense (Technology    Security Policy)           o   Defense Advisor, U.S. Mission NATO
- Assistant Secretary of Defense (Command, Control, Communications,    and Intelligence)
- Assistant Secretary of Defense (Legislative Affairs) 
- Assistant Secretary of Defense (Public Affairs) 
- General Counsel of the DoD
- Director of Operational Test and Evaluation
- Assistant to the Secretary of Defense (Intelligence Oversight)
- Director of Administration and Management
- Director of Net Assessment

**DEFENSE AGENCIES**- Organization Chart            o    Ballistic Missile Defense    Organization           o    Defense Advanced Research    Projects Agency            o    Defense Commissary Agency           o    Defense Contract Audit Agency           o    Defense Contract Management    Agency           o    Defense Finance and Accounting    Service           o    Defense Information Systems    Agency           o    Defense Intelligence Agency           o    Defense Legal Services Agency           o    Defense Logistics Agency           o    Defense Security Cooperation    Agency           o    Defense Security Service           o    Defense Threat Reduction Agency           o    National Imagery and Mapping    Agency           o    National Security Agency/Central    Security Service

**DOD FIELD ACTIVITIES**- Organization Chart            o    American Forces Information    Service           o    Defense Prisoner of War/Missing    Personnel Office           o    Department of Defense Education    Activity           o    DoD Human Resources Activity           o    Office of Economic Adjustment           o    TRICARE Management Activity           o    Washington Headquarters Services