- Organized 1 April 1916 in the Louisiana National Guard at Alexandria as Company M, 1st Regiment of Infantry
- Mustered into Federal service 25-29 June 1916 at Camp Stafford, Louisiaia; mustered out of Federal service 25 September 1916 at Camp Stafford, Louisiana, and reverted to state control
- Called into Federal service 10 April 1917 at Camp Nicholls, Louisiana; drafted into Federal service 5 August 1917 at Camp Beauregard, Louisiana
- Reorganized and redesignated 27 September 1917 as Company M, 156th Infantry, an element of the 39th Division
- Company broken up 29 October 1917 and personnel used to form Companies E, F, G, and H, 154th Infantry, and Company F, 114th Engineers, elements of the 39th Division
- Demobilized 23 January 1919 at Camp Beauregard, Louisiana
- Reorganized and Federally recognized 24 August 1921 in the Lousiana National Guard at Alexandria as Company A, a separate company of infantry
- Redesignated 3 November 1921 as Company A, 156th Infantry, an element of the 39th Division
- (156th Infantry relieved 1 July 1923 from assignment to the 39th Division and assigned to the 31st Division)
- Reorganized and redesignated 1 December 1926 as the Howitzer Company, 156th Infantry
- Reorganized and redesignated 1 September 1939 as Company D, 156th Infantry
- Redesignated 13 January 1940 as Company M, 156th Infantry
- Inducted into Federal service 25 November 1940 at Alexandria
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(156th Infantry relieved 14 July 1942 from assignment to the 31st Division)
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Inactivated 14 March 1946 at Camp Kilmer, New Jersey
- Reorganized and Federally recognized 31 March 1948 in the Louisiana Army National Guard at Alexandria as the Medical Company, 156th Infantry, an element of the 39th Infantry Division
- Converted, reorganized, and redesignated 1 July 1959 as a Tactical Carrier Platoon and a Maintenance Section, 1087th Transportation Company; concurrently relieved from assignment to the 39th Infantry Division
- Consolidated 1 May 1963 with the 3671st Ordnance Company (see ANNEX 1) and consolidated unit designated as the 3671st Ordnance Company
- Redesignated 1 December 1967 as the 3671st Heavy Equipment Maintenance Company
- Redesignated 1 November 1975 as the 3671st Maintenance Company
- Location changed 1 May 1978 to Pineville
- Consolidated 1 September 2005 with the 2228th Military Police Company (see ANNEX 2) and consolidated unit designated as the 2228th Military Police Company
- Ordered into active Federal service 17 March 2008 at Pineville; released from active Federal service 20 April 2009 and reverted to state control
- ANNEX 1
- Constituted 25 February 1943 in the Army of the United States as the 368th Ordnance Maintenance Company, Antiaircraft
- Activated 20 October 1943 at Camp Haan, California
- Inactivated 10 March 1946 at Camp Kilmer, New Jersey
- Redesignated 17 June 1946 as the 3671st Ordnance Medium Maintenance Company and allotted to the Louisiana National Guard
- Organized and Federally recognized 9 December 1946 at Alexandria
- Redesignated 15 September 1952 as the 3671st Ordnance Company
- ANNEX 2
- Organized and Federally recognized 1 March 1977 in the Louisiana Army National Guard at Pineville as Detachment 1, 239th Military Police Company
- Converted, reorganized, and redesignated 1 December 1987 as the 935th Engineer Detachment
- Converted, reorganized, and redesignated 1 May 1993 as Detachment 1, 239th Military Police Company
- Reorganized and redesignated 1 September 2004 as Detachment 1, 2228th Military Police Company
- Reorganized and redesignated 16 July 2005 as the 2228th Military Police Company
HOME STATION: Pineville (less detachment at St. Charles)