The flame trooper corps was a specialized corps within the Grand Army of the Republic. During the Clone Wars, this unit fought against the Confederacy of Independent Systems and was composed of clone flametroopers. The first iteration of their protective gear was the MK I insulated armor; however, this armor had a critical design flaw: inadequate respirator filtration. A significant improvement came with the introduction of the MK II "Hotspot" Insulated Armor, which quickly resolved the filtration issue and greatly improved the morale of the flame trooper corps. Notably, the flame trooper corps saw action during the Second Battle of Geonosis, fighting alongside special ops clone troopers and under the command of Jedi General Ki-Adi-Mundi and Clone Commander Jet.