Constituted 5 August 1917 in the National Army as the 312th Engineers and assigned to the 87th Division

Organized in August 1917 at Camp Pike, Arkansas

Demobilized 28 June 1919 at Camp Dix, New Jersey

Reconstituted 11 September 1929 in the Organized Reserves; concurrently consolidated with the 312th Engineers (organized in January 1922 in the Organized Reserves with Headquarters at Meridian, Mississippi) and consolidated unit designated as the 312th Engineers, an element of the 87th Division

Reorganized and redesignated (less 2d Battalion) 30 January 1942 as the 312th Engineer Battalion, an element of the 87th Division (later redesignated as the 87th Infantry Division)(2d Battalion--hereafter separate lineage)

Ordered into active military service 15 December 1942 and reorganized at Camp McCain, Mississippi; concurrently redesignated as the 312th Engineer Combat Battalion

Inactivated 21 September 1945 at Fort Benning, Georgia

Activated 7 June 1947 at Birmingham, Alabama

(Organized Reserves redesignated 25 March 1948 as the Organized Reserve Corps; redesignated 9 July 1952 as the Army Reserve)



Reorganized and redesignated 30 April 1953 as the 312th Engineer Battalion

Inactivated 30 April 1954 at Birmingham, Alabama

Headquarters, 312th Engineer Battalion, consolidated 17 October 1999 with Headquarters, 3d Brigade, 87th Division (Exercise) (activated 1 October 1993 at Jackson, Mississippi; location changed 1 April 1997 to Camp Shelby, Mississippi); consolidated unit reorganized and redesignated as Headquarters, 3d Brigade, 87th Division (Training Support) and allotted to the Regular Army at Camp Shelby, Mississippi (remainder of 312th Engineer Battalion concurrently disbanded)

Headquarters
3d Brigade, 87th Division (Training Support) Honors

Campaign Participation Credit

World War I: Streamer without inscription

World War II: Rhineland; Ardennes-Alsace; Central Europe

Decorations

None