AT-TE walker 636 functioned as an All Terrain Tactical Enforcer and was part of the Grand Army of the Republic during the events of the Second Battle of Geonosis. In that battle, Commander Cody gave the crew instructions to provide suppressive fire at location 35, allowing clone troopers Boil and Waxer to rescue Jedi Master Obi-Wan Kenobi and clone trooper Trapper from their crashed Low Altitude Assault Transport.