The 31st Legion was a legion in the Grand Army of the Republic and later the Stormtrooper Corps. It was led by senior clone commander CC-1696 "Bryse", often in conjunction with Jedi General Shahmzar Aonda-Alci. General Aonda-Alci's Padawan, Commander Ac'churo Valnuon, also led the 240th Regiment, a division of the 31st, along with clone trooper commander CC-3839 "Mirshe". The troopers of the 31st Legion were distinguished by their cyan-trimmed armor. They were among the first in the army to color their armor according to division rather than the ranks of individual troopers.