- Organized in 1903 in the South Carolina State Troops at New Brookland as Company M (Brookland Guards), 2d Infantry Regiment
- (South Carolina State Troops redesignated in 1905 as the South Carolina National Guard)
- Redesignated 1 April 1915 as Company H, 2d Infantry Regiment
- Mustered into Federal service 7 April 1916 at Camp Moore, South Carolina; mustered out of Federal service 20 March 1917 at Camp Moore, South Carolina
- Mustered into Federal service 25 July 1917; drafted into Federal service 5 August 1917
- Converted and redesignated 12 September 1917 as Company G, 105th Ammunition Train, an element of the 30th Division
- Demobilized 3 April 1919 at Camp Jackson, South Carolina
- Reorganized and Federally recognized 5 May 1921 in the South Carolina National Guard at New Brookland as Company H, 1st Infantry
- Redesignated 19 December 1921 as Company H, 118th Infantry, an element of the 30th Division
- (New Brookland renamed in 1936 to West Columbia)
- Inducted into Federal service 16 September 1940 at West Columbia
- (118th Infantry relieved 24 August 1942 from assignment to the 30th Division)
- Inactivated 15 January 1946 at Camp Kilmer, New Jersey
- Reorganized and Federally recognized 4 April 1947 at West Columbia as the 51st Military Police Company, an element of the 51st Infantry Division
- Converted and redesignated 1 April 1959 as the 51st Administration Company (South Carolina part) and remained assigned to the 51st Infantry Division
- Consolidated 1 April 1963 with the Military Police Detachment, Headquarters Company, 51st Infantry Division (organized and Federally recognized 1 April 1959 at West Columbia); consolidated unit relieved from assignment to the 51st Infantry Division, reorganized, and redesignated as the 132d Military Police Company
- Converted and redesignated 1 January 1968 as 740th Repair Parts Company
- Reorganized and redesignated 1 December 1971 as Detachment 1, Company C, 730th Maintenance Battalion, an element of the 30th Infantry Division
- Reorganized and redesignated 1 January 1974 as Company A, 163d Support Battalion, an element of the 218th Infantry Brigade
- Redesignated 1 October 1986 as Company D, 163d Support Battalion
- Converted and redesignated 1 September 1988 as the 263d Personnel Service Company and relieved from assignment to the 218th Infantry Brigade
- Consolidated 1 September 1993 with Headquarters and Headquarters Company, 218th Infantry Brigade (see ANNEX 1); consolidated unit designated as Headquarters and Headquarters Company, 218th Infantry Brigade, and location changed to Newberry
- Ordered into active Federal service 29 January 2007 at Newberry; released from active Federal service 26 July 2008 and reverted to state control
- Consolidated 1 March 2009 with Detachment 1, Headquarters and Headquarters Company, 218th Infantry Brigade (organized and Federally recognized 19 December 2006 at Mount Pleasant), and Headquarters and Headquarters and Headquarters Company, 218th
- Maneuver Enhancement Brigade (see ANNEX 6); consolidated unit designated as Headquarters and Headquarters Company, 218th Maneuver Enhancement Brigade, and location changed to North Charleston
- Location changed 1 October 2009 to Charleston
- Ordered into active Federal service 12 July 2012 at Charleston; released from active Federal service 15 August 2013 and reverted to state control
- ANNEX 1
- Constituted 11 December 1951 in the South Carolina Army
National Guard as the 131st Antiaircraft Artillery Operations Detachment
- Organized and Federally recognized 4 January 1952 at
Newberry
- Reorganized and redesignated 1 August 1952 as Headquarters and Headquarters Battery, 228th Antiaircraft Artillery Group
- Converted and redesignated 1 April 1959 as Headquarters and Headquarters Detachment, 228th Signal Group
- Converted and redesignated 1 April 1963 as Headquarters and Headquarters Battery, 163d Artillery Group
- Converted and redesignated 1 January 1968 as Headquarters and Headquarters Company, 2d Brigade, 30th Infantry Division
- Relieved 1 January 1974 from assignment to the 30th Infantry Division; concurrently consolidated with Detachment 1, 30th Military Police Company (see ANNEX 2); Detachment 1, 130th Finance Company (organized and Federally recognized 1 December 1971 at Newberry); Detachment 3, 30th Adjutant General Company (see ANNEX 3); and Detachment 1, Company A, 230th Supply and Transport Battalion (see ANNEX 4), and consolidated unit redesignated as Headquarters and Headquarters Company, 218th Infantry Brigade
- Consolidated 1 October 1986 with Detachment 1, Company A,
163d Support Battalion (see ANNEX 5), and the 218th Signal Detachment (organized 1 July 1980 at Newberry) and consolidated unit designated as Headquarters and Headquarters Company, 218th Infantry Brigade
- ANNEX 2
- Constituted 23 March 1959 in the South Carolina Army National Guard as Battery A, 1st Automatic Weapons Battalion, 263d Artillery
- Organized and Federally recognized 1 April 1959 at Newberry
- Converted and redesignated 1 January 1968 as the 2d Military Police Platoon, 30th Military Police Company, an element of the 30th Infantry Division
- Reorganized and redesignated 1 December 1971 as Detachment 1, 30th Military Police Company
- ANNEX 3
- Constituted 14 December 1967 in the South Carolina Army National Guard as the Personnel Administration Detachment, 30th Administration Company, an element of the 30th Infantry Division
- Organized and Federally recognized 1 January 1968 at Newberry
- Reorganized and redesignated 1 December 1971 as Detachment 3, 30th Adjutant General Company, an element of the 30th Infantry Division
- ANNEX 4
- Constituted 15 March 1963 in the South Carolina Army National Guard as the 384th Signal Detachment
- Organized and Federally recognized 1 April 1963 at Columbia
- Location changed 1 April 1966 to Newberry
- Converted and redesignated 1 January 1968 as the 2d Forward Support Section, Company A, 230th Supply and Transport Battalion, an element of the 30th Infantry Division
- Reorganized and redesignated 1 December 1971 as Detachment 1, Company A, 230th Supply and Transport Battalion
- ANNEX 5
- Organized and Federally recognized 29 September 1939 in the South Carolina National Guard at Newberry as Company I, 263d Coast Artillery
- Redesignated 15 April 1940 as Battery H, 263d Coast Artillery
- Reorganized and redesignated 10 December 1940 as Battery C, 107th Separate Battalion, Coast Artillery
- Inducted into Federal service 10 February 1941 at Newberry
- Inactivated 5 December 1944 in Italy
- Reorganized and Federally recognized 3 March 1947 at Newberry
- Redesignated 1 October 1953 as Battery C, 107th Antiaircraft Artillery Battalion
- Reorganized and redesignated 1 April 1959 as Battery C, 1st
Automatic Weapons Battalion, 263d Artillery
- Reorganized and redesignated 1 January 1968 as part of Company B, 230th Supply and Transport Battalion, an element of the 30th Infantry Division
- Reorganized and redesignated 1 January 1974 as Detachment 1,
Company A, 163d Support Battalion, an element of the 218th Infantry Brigade
- ANNEX 6
- Organized and Federally recognized 1 May 1979 in the South Carolina Army National Guard at North Charleston as Headquarters and Headquarters Detachment, 105th Signal Battalion
- Consolidated 1 October 1996 with the 113th Transportation Detachment (see ANNEX 7), and consolidated unit designated as Headquarters and Headquarters Detachment, 105th Signal Battalion
- Converted and redesignated 1 September 2008 as Headquarters and Headquarters Company, 218th Maneuver Enhancement Brigade
- ANNEX 7
- Constituted 1 January 1992 in the South Carolina Army National Guard as the 118th Transportation Detachment
- Organized and Federally recognized 23 September 1992 at North Charleston
- Reorganized and redesignated 1 October 1995 as the 113th Transportation Detachment
HOME STATION: Charleston (less detachment at Mount Pleasant)