Army of One Army of One is Lightning ' s signature attack that first appeared in " Final Fantasy XIII " . It comprises of Lightning lunging at the enemy and performing multiple hits in quick succession ; in this sense it is similar to other " Final Fantasy " protagonists ' trademark attacks , such as Cloud Strife ' s Omnislash , Squall Leonhart ' s Renzokuken , or Tidus ' s Blitz Ace . " Legion of One " in " Final Fantasy XIII - 2 " can be considered an upgraded version of " Army of One " . A " legion " is normally one of many military units that together constitute an army , meaning there are fewer people in a legion than in an army . However , the word " legion " relates to Lightning ' s more mythical appearance in " Final Fantasy XIII - 2 " as opposed to sci - fi setting of " Final Fantasy XIII " . Appearances . " Final Fantasy XIII " . Army of One is Lightning ' s Full ATB skill . It is part of her Ravager Crystarium tree , and deals 11 hits of physical damage against a single opponent . The game calculates every hit separately so it can be effectively used with and both variations of Attack : ATB Charge . Army of One has a special effect when used against a staggered foe , in which the ability gains a boost in its ability to accumulate chain bonus and it can very quickly fill the enemy ' s gauge to 999 . 9 % . The attack manifests as several fast strikes from Lightning ' s gunblade , as well as heavy kicks . Interestingly , if this move is performed midair , it has the same appearance as a ground attack , meaning Lightning lands midair during the attack , and also pushes off the air for her back - flip kick . Army of One is a physical attack that uses Lightning ' s strength stat to calculate damage . Army of One ignores physical resistance , but also ignores physical weaknesses ; it will deal 100 % damage whether it is resistant , normal , or weakness . Army of One can be affected by Commando bonus , Bravery / Bravera , and Debrave , but it is not affected by Deprotect , Protect on enemy , or enhanced element spells like Enfire . The player is able to use a Paradigm Shift during the cutscene that Lightning uses her Full ATB Skill . If the player shifts to Commando role during the attack animation , Lightning will deal more damage but will still increase the chain bonus . " Final Fantasy XIII - 2 " . Lightning uses Army of One against Caius Ballad in a Cinematic Action during the game ' s prologue . Army of One is also Lightning ' s Feral Link that unleashes a flurry of blows to the target . It is performed by input of button commands . To get Lightning in the party the player must download her battle — Operation XIII - 2 — as extra content . In the downloadable content scenario , " " , Lightning can perform an altered version of Army of One , known as " Legion of One " ( " Scene Drive Kai " in the Japanese release ) as a Feral Link rather than being a full ATB skill . It has a minor Drain effect converting 3 % of the dealt damage as user ' s HP . Lightning can still use Legion of One when recruited as a Paradigm Pack ally from defeating the final boss of " Requiem of the Goddess " on Level 9 or lower , but it does not include the minor Drain effect . The maximum Synchronization rate that player can achieve with Legion of One in both forms is about 350 . 0 % . Army of One is an EP ability used while the EP ability Overclock is activated and consumes an additional EP . It is obtained automatically at the start of . When activated , Lightning unleashes a barrage of slashing attacks on enemies while freely switching between the three Schema ta equipped to her and replenishing HP . The auto ability boosts the damage done by Army of One . One can use Army of One just before Overclock ends to get the most out of the EP spent . This iteration of Army of One resembles Cloud ' s Omnislash Version 5 from " " . " Final Fantasy Tactics S " . Army of One is Special Ability of Lightning ' s " Final Fantasy XIII " incarnation . " Dissidia 012 Final Fantasy " . Army of One appears as one of Lightning ' s Bravery attacks in " Dissidia 012 Final Fantasy " , under her Ravager role . There are two versions of it ; ground attack and midair attack . It has a slow start - up , followed by Lightning spinning towards opponents while slashing , then performing a series of attacks using both the sword and gun forms of her weapon to launch the enemy into the air , beginning a Chase Sequence . Lightning learns the ground version at Level 27 and the midair version at Level 35 , both versions cost 20 CP to equip and 130 AP to master . " Mobius Final Fantasy " . Army of One is the Ultimate for Knight of Etro , and despite its name it uses the animation of Legion of One . " Final Fantasy Trading Card Game " . One of Lightning ' s cards can use Army of One . For the discard cost of another Lightning card and a Thunder CP , Lightning gains the abilities Haste and Pre - Emptive Strike for the rest of the turn .