are one of the only battalions to have two Commanders. (like with other squads and battalions) and became known as the 501st Legion 'Vader's Fist' which is the entire Galactic Empire. became absorbed into what was left of the 501st Torrent Co. They also wore Phase 2 ARF Scout armor with forest camo while on Kashyyyk, similar to how the Clones of 212th Attack Battalion wore Phase 1 ARF Scout armor with desert camo. The battalion has dark green markings for the standard Clones enlisted within the battalion, as well as the unit officers and specialists having much more distinct light green markings with unique decals and patterns (such as Draa and Buzz).

The unit was also known simply as 'Green Company' which also served as the nickname or callsign to which the battalion had green markings for the Clone Troopers enlisted within the unit, and to which Commander Gree's name derives from the actual name of the color 'green'. Thus, they eventually became a redeveloped unit within the Grand Army of the Republic and were no longer part of the 3rd Brigade, but rather an entirely new brigade bearing the '41st' name (thus, 'Grey Company' was established alongside 'Green Company' after becoming merged with the 7th Battalion making the latter all part of the 41st Elite Corps.

Although they were an elite unit during their primetime in the Clone Wars, they (however) suffered many numerous defeats due to being 'underpowered' during certain battles, and often required reinforcements from other units. fought in many numerous battles during the Clone Wars, and were often assigned to several major campaigns (like with most other units). Roopers led by Jedi General Luminara Unduli, Padawan Commander Barriss Offee (briefly), and Marshal commanding officer Clone Commander Gree (who served as Senior Clone Officer). (originally known as 'Green Company' when it was a battalion during the middle of the Clone Wars) was a regiment of Clone T

List of clone commanders