91st Engineer Battalion
As part of the Army's transformation towards a modular force, the 91st Engineer Battalion was inactivated at Fort Hood on July 8, 2005. Many of the personnel formerly attached to the 91st ENG Battalion continued to serve with the 2nd Brigade STB.
The 91st Engineer Battalion was originally constituted on 1 October 1933 in the Regular Army as the 50th Engineer Battalion (Separate).
On 1 January 1938, it was redesignated as the 91st Engineer Battalion (Separate) and was activated on 10 February 1941 at Camp Shelby, MS.
On 10 July 1942, the unit was reorganized and redesignated as the 91st Engineer Regiment (General Service) before being redesignated on 6 August 1942 as the 91st Engineer General Service Regiment. The 91st inactivated at Manila, Philippine Islands, on 20 January 1946.
The Regiment (less Headquarters and Headquarters Detachments, 1st, 2nd Battalions and Companies "E" and "F") was reorganized on 28 November 1951 and redesignated as the 91st Engineer Combat Battalion. It activated at Fort Belvoir, VA, on 4 January 1952.
On 20 May 1953, the unit reorganized and was redesignated as the 91st Engineer Engineer Battalion (Combat). It inactivated at Fort Belvoir, VA, on 20 May 1971.
The 91st reactivated at Fort Hood, TX, on 16 October 1992; and was assigned to the 1st Cavalry Division.
The coat of arms was originally approved on 22 Nov 1939. It was amended on 16 Mar 1999 to add a crest.
The shield is red with a plate (white), which are the colors of the Corps of Engineers, and the masoned bridge charged thereon represents Engineering accomplishment. The demi-sunburst refers to World War II campaigns in the East Indies. The fountain represents the Pacific Ocean and the Asiatic-Pacific theater of the war. The kris, a typical weapon of Indonesia and Papua, symbolizes that region of the Pacific and its significance during World War II. Gold denotes excellence.
