13th Combat Sustainment Support Battalion (CSSB) is a modular, corps-level support organization responsible for providing multifunctional logistics support to maneuver, fires, and effects organizations as well as multifunctional logistics assistance to other support organizations. The 13th CSSB was formerly stationed at Fort Benning, Georgia, and was a subordinate unit of the 3rd Sustainment Brigade. The battalion was deactivated in October 2011 at Ft Benning and reflagged from the former 80th Ordnance Battalion at Joint Base Lewis/McChord. The battalion is now subordinate to the 593rd Expeditionary Sustainment Command.