41st Stormtrooper Legion The 41st Elite Corps , later redesignated as the 41st Stormtrooper Legion , was a legion of elite clones in the Grand Army of the Republic , composed of many variants of troopers , including AT - RT driver s , clone scout troopers and BARC troopers . Their legion color was alternately gray or marked with green camouflage . The 41st Elite was a division out of the 9th Assault Corps , under command of Jedi General Luminara Unduli and Clone Commander Gree . History . Though officially designated as the 41st Elite Corps , this battle group led by General Luminara Unduli and Clone Commander 1004 was a legion of elite clones from out of the 9th Assault Corps . The 41st Elite specialized in long patrols on alien planets , often operating in primitive and grueling conditions while forging alliances with indigenous populations . Seeing so many alien species even caused CC - 1004 to become an expert on species and customs , taking on the name Gree to display his knowledge of obscure galactic species . The methodology of the 41st Elite caused the special unit to quickly become known as specialists in hostile terrain warfare , as well as alien recruitment and counter - insurgency experts . They maintained a large armory with gray - marked Phase II and camouflaged scout armor for jungle duty . With AT - RT driver s , clone scout troopers and BARC troopers , the 41st Elite Corps pioneered the use of AT - RTs , BARC speeders and Juggernauts , using them for reconnaissance and battles such as the Battle of Kashyyyk — where they worked in conjunction with the 442nd Siege Battalion Infantry Support Platforms . A year into the war , Gree and the 41st Elite participated in the Battle of Dinlo , where they became pinned down by a large number of droid forces . Jedi General Tur - Mukan led a mission to evacuate the legion from Dinlo . The 41st Elite were then granted shore leave on Coruscant , partly as cover for Kal Skirata ' s black ops missions , and partly as a morale booster . One unit of the 41st Elite , Green Company , would see action on board the Republic Cruiser " Tranquility " when the cruiser came under attack from Separatist forces under the command of Asajj Ventress . At that time , the " Tranquility " carried the Viceroy of the Trade Federation , Nute Gunray , as prisoner on the ship . Ventress had been sent to either rescue Gunray or silence him , and the ensuing battle caused Green Company to lose eighteen men defending the cruiser . Later , Green Company and saw action in the brutal retaking of the planet Geonosis , after intelligence had revealed that Archduke Poggle the Lesser had built a new droid foundry there . In 19 BBY , the 41st Elite saw heavy action in the battle of Kashyyyk against the droid invasion force sent to seize the world . There , the clone troopers of the 41st Elite fought alongside Wookiee warriors and a small clique of Jedi to a near standstill against the Confederacy . While most of their men were transferred to Kashyyyk , a detachment of the 41st Elite was sent to assist in the Battle of Utapau . When Palpatine initiated Order 66 , Commander Gree and his soldiers promptly turned on Yoda , however Yoda sensed their intent and killed Gree and his fellow clone trooper and managed to escape with the help of Chewbacca and Tarfful . Units within the 41st Elite Corps . Vehicles . The 41st was known to utilize AT - RT walkers , BARC speeders , and Infantry Support Platforms for anti - infantry and recon purposes , as well as AT - APs for artillery support , and HAVw A6 Juggernauts as heavy missile platforms / troop transports .