The 3rd Division Sustainment Brigade has a permanent organization of two attached battalions, however this number can be changed when the unit is deployed in a theater of operations.

Under non-deployment circumstances, the HHC of the Brigade would, in turn, be directly subordinate to the 3rd Infantry Division.

[1] It was deployed to as part of the Cold War buildup, should hostilities arise in the region with the Soviet Union.

After the initial invasion and capture of Baghdad, the brigade remained in the city, supporting the 3rd Infantry Division as the unit conducted counterinsurgency and infrastructure activities in the area.

It was relieved during a change of command ceremony on 9 August 2008, at which time it returned to Fort Stewart.

[6] Since its return, the brigade participated in an intramural soccer tournament at Fort Benning, something many of its members enjoyed doing, even while deployed.

[8] In September 2014, the brigade deployed a sixth time to Camp Arifjan, Kuwait, to support sustainment and retrograde operations in seven middle eastern countries.