Army C, equipped with Armored Assault Tanks alongside Multi-Troop Transports, functioned as an element of the Trade Federation Droid Army. During the Invasion of Naboo in 32 BBY, its mission was to flank the Gungan Grand Army throughout the Battle of Grassy Plains. Ultimately, Lieutenant Gavyn Sykes, a pilot serving within the Royal Naboo Security Forces, brought about the destruction of Army C.
Army C's initial appearance occurred in the video game Star Wars: Episode I: Battle for Naboo, released in 2000. Furthermore, it received identification within a schematic illustrating the Battle of Grassy Plains, featured in the reference book titled The New Essential Guide to Vehicles and Vessels.