A droid battalion was sent by General Grievous, the Supreme Martial Commander of the Separatist droid armies, to bolster a Separatist Alliance outpost located on Felucia. TZ-33 assumed control of the battle droids from the battalion after they disembarked from a C-9979 landing craft. Soon after their arrival, the 104th Battalion, 501st Legion, and clone tank divisions launched an assault on the outpost. The Galactic Republic forces swiftly annihilated the Separatist contingent.