Regiment / Legends A regiment was a ground military unit , normally consisting of a number of battalions . Galactic Republic . In the Grand Army of the Republic a regiment consisted of four battalions , for a total of 2 , 664 clone troopers plus officers and support personnel . It was led by a Jedi Commander ( usually the Padawan of the Jedi General commanding a parent unit ) and a Clone Commander , also known as a clone regimental commander . Four of these regiments formed a Legion . However , the Republic also operated regiments of 1000 troopers . Confederacy of Independent Systems . In the Separatist Droid Army , regiments were composed of four battalions of 784 droids and a single vanguard of 1 , 232 droids , for a total of 4 , 386 battle droids and support droids , and 114 repulsortanks . They were led by an OOM command battle droid . Vanguards were a sub - regimental formation designed to break through heavy defenses , and were composed of 1 , 232 battle droids and support droids in eleven Multi - Troop Transport companies and one squadron of 18 Armored Assault Tanks . Regiments were the total number of troops and vehicles carried aboard one C - 9979 landing craft . Galactic Empire . Imperial Army . In the Imperial Army a regiment was a combined - armed led containing approximately 2 , 500 combat troops and 1 , 000 support personnel . It was commanded by a Lieutenant - Colonel with a command staff the same as a battalion ' s , with five staff officers of Captain rank and accompanying support personnel , however it generally contained more droids upwards of 200 . Regimental HQs also had a large repair workshop and some were equipped with nanomanufacturing capabilities that allowed them to take very basic components and produce spare parts . The workshops were included in regimental headquarters because the size and strength of the regiment , being formidable enough to ensuring the capture and long - term occupation of a planetary territorial region , required extensive resupply and support Usually the regimental HQ was stationed in orbit aboard a vessel , although if orbital command was disrupted it could quickly be dropped onto the planet ' s surface . Only when the regiment was expected to be engaged in long - term operations ( over a month ) and there was no guarantee of supporting naval presence was the HQ deployed along with their troops . A regiment could also be augmented per their Order of Battle , in which case the additional units were commanded by the battalion ' s second - in - command . The Alliance to Restore the Republic General Carlist Rieekan , when looking through the official field manual for the Imperial Military , " " , acknowledged reluctantly that on most worlds , the Rebel Alliance lacks the troop strength to engage in open conflict at the regimental level . Line Regiment . A line regiment contained two line battalions , one assault battalion and one repulsorlift battalion . They were usually stationed on worlds with none or a low threat level . However , by combining assault and repulsorlift battalions , a line regiment could deploy a fast response to an attack without using its whole strength . Together there were 2 , 558 troops , 972 support personnel and 130 repulsorlift vehicles . Fully augmented line regiments had a second assault battalion , a third line battalion , an artillery battalion and a second repuslorlift battalion . Assault Regiment . Assault regiments were pure combat units . Their job was to attack and conquer an identified rebel stronghold or area . Once the battle was over , a line regiment would replace the assault regiment . Two assault , one line and one heavy armor battalion made up an assault regiment for a total of 2 , 545 troops , 1 , 001 support personnel , 121 repulsorlift vehicles and 53 heavy tanks . At full strength it also contained a special missions battalion , a second line battalion , a third assault battalion and an artillery battalion . Repulsorlift Regiment . Repuslorlift regiments were deployed across large areas with light and scattered resistance where there was a need for quick response . Three repulsorlift and one armor battalion made up a repulsorlift regiment and its HQ , which was completely mobile , would be deployed along with the rest of the regiment more frequently than with other regiment types . This was not out of some need but by Imperial commanders using the HQ to tempt rebels into attacking it and leading them into a trap . Depending on the size of the armor battalion ( heavy or light ) , the strength of a repulsorlift regiment was 2 , 641 or 2 , 735 troops , around 1 , 305 support personnel , 53 or 93 tanks , 400 repulsorlift vehicles and 120 speeder bikes . Augmented regiments could essentially double in size with three more repulsorlift and a second armored battalion . Artillery Regiment . An artillery regiment consisted of three artillery battalions , one assault battalion and a scout company . During the formation of the Imperial Army , artillery had been given the least priority of the combat arms , with the common thinking that artillery would play no significant role on modern battlefields . The Rebellion , however , proved them wrong and attempts were made to quickly revitalize this force . Officially an artillery regiment would be attached to a battlegroup and operate as a single unit . However due to some complaints by junior officers on occasion smaller artillery units were assigned at the regimental or battalion level , such as an artillery battery being attached to a line battalion , although this was not reflected in the OB . When operating together there were 2 , 425 troopers , 1 , 095 support personnel , 144 medium / heavy or 288 light tubes , 53 tanks and 199 repulsorcraft in the regiment , and it could be augmented with a repulsorlift battalion and three more artillery battalions . Armor Regiment . Armor regiments had the most firepower of all regiments but lacked the numbers in infantry for any garrison duty . Because of this , armor regiments were never deployed alone and operated only as part of Battlegroup formations . There were two kinds of armor battalions , ‘ line ’ and ‘ vanguard ’ . One well - known regiment was the 112th Repulsorlift Armor Regiment commonly known as " Hell ' s Hammers " . The Regiment fought at the Battle of Turak IV , Subjugation of Absit and the Assault on Protazk . It used the S - 1 FireHawke Heavy Repulsortank and the 1 - H " Imperial " - class repulsortank . Vanguard Armor Regiment . A vanguard regiment was composed of three armor battalions and one repulsorlift battalion . Together there were 2 , 483 troopers , 1 , 559 support personnel , 262 repulsor vehicles and several tanks . Augmented regiments had four additional armor battalions . Line Armor Regiment . A line armor regiment had two heavy armor battalions and two repulsorlift battalions , giving it more repulsorlift vehicles but also more firepower thanks to the heavy tanks . In total there were 2 , 562 troops , 1 , 432 support personnel , 304 repulsorlift vehicles and 106 heavy tanks . It was expanded with a third repulsorlift battalion , an assault battalion and two additional armor battalions . COMPNOR Regiment ( CompForce ) . CompForce regiments ( composed of fanatical but ill - trained COMPNOR troops ) had the same basic structure as an army line regiment , but without the security platoons or augmentation plan . Their fanaticism and loyalty to the cause was deemed reason enough to dispense with these platoons as unnecessary , which was yet another of the many reasons the regular army disliked CompForce . Stormtroopers . The Stormtrooper Corps , the successors to the GAR , also used regiments composed of four battalions and commanded by a Lieutenant - Colonel for a total of 2 , 048 stormtroopers . Stormtrooper regiments were pure combat units with no support personnel , instead taking what they needed from the regular Army . In addition to stormtroopers , there were 404 officers within a regiment , with 2 , 453 units ( composed of four battalions plus one unit ) . In addition , a stormtrooper regiment ' s size was sufficient to seize a Class A planetary starport .