Origins The 15th Support Brigade was originally constituted on 4 May 1966 in the
Regular Army as a
Headquarters and Headquarters Company. It was first activated on 1 July 1966. On 20 October 1967, the 15th Support Brigade was inactivated after providing support to units in
Vietnam, only to be reactivated on 21 September 1968 at
Fort Lewis,
Washington. The Brigade later inactivated at Fort Lewis on 21 March 1973 having received campaign credits for its support for Counteroffensive Operations (Phase II and III) in Vietnam. Although a new organization, 1st Cavalry Division's Division Trains employed concepts and tactics similar to those of U.S.
armored division trains that were originated in
World War I. The opening battle of the campaign, the
Battle of Ia Drang Valley, was described in the book
We Were Soldiers Once...And Young which was also the basis of the subsequent
Mel Gibson film
We Were Soldiers. For most of 1967 and early 1968, the formation supported the 1st Cavalry Division through
Operation Pershing. This was a large scale search of areas under the jurisdiction of the US
II Corps which, according to the US Army, saw 5,400 enemy killed and 2,000 captured. The 15th Sustainment Brigade was the first element of the 1st Cavalry Division to return to Iraq and assumed control for logistics in the Baghdad area of operations in July 2006. The Brigade provided command and control for numerous units not normally associated with the 1st Cavalry Division. Tasks the unit completed during its 2006–2007 tour in Iraq included construction and maintenance of sustainment facilities, and maintaining vehicles, including adding additional armor to
Humvee vehicles for other US units operating in the country. The Brigade changed its higher command for the first time in its history on 15 February 2008. It was reassigned from the 1st Cavalry Division to the 13th Sustainment Command (Expeditionary), holding a mock
cavalry charge to celebrate the occasion. This would also mark the first time that the brigade served independently from the 1st Cavalry Division. Since returning from Iraq, the brigade has undertaken a number of duties around Fort Hood. These activities include testing new systems for use during deployments, remodeling infrastructure around the fort, and training on personal safety. ==Honors==