The unit was initially constituted 25 January 1907 in the Regular Army as the
133rd Company,
Coast Artillery Corps. Organized 1 August 1907 at
Fort Terry, New York. Redesignated 3 July 1916 as the 3d Company, Fort Terry (New York). Redesignated 31 August 1917 as the 13th Company,
Coast Defenses of Long Island Sound. Redesignated in December 1917 as Battery A, 56th Artillery (Coast Artillery Corps). Demobilized 31 July 1921 at
Camp Jackson, South Carolina. Reconstituted 1 June 1922 in the Regular Army; concurrently consolidated with the 4th Company, Coast Defenses of Long Island Sound (organized in June 1917 as the 7th Company,
Fort H.G. Wright (New York); redesignated 31 August 1917 as the unit was redesignated as the 133rd Company, Coast Artillery Corps. • Redesignated 1 July 1924 as Headquarters Battery,
11th Coast Artillery (Headquarters, 11th Coast Artillery, concurrently constituted and activated at Fort H.G. Wright, New York). Inactivated 7 April 1944 at
Fort Leonard Wood, Missouri. Disbanded 14 June 1944. • Headquarters and Headquarters Battery, 11th Coast Artillery, reconstituted 28 June 1950 in the Regular Army; concurrently consolidated with Headquarters and Headquarters Battery, 11th Antiaircraft Artillery Group (active), and Antiaircraft Artillery Group. Inactivated 27 April 1953 at
Fort Tilden, New York. Activated 15 January 1955 at
Camp Stewart, Georgia. • HHB, 11th AAA Group (Continental) was redesignated as Headquarters & Headquarters Battery, 11th Artillery Group (Air Defense) on 20 March 1958. Transferred from Fort Jackson, South Carolina, to Rehoboth, Massachusetts, 15 May 58. Controlled 4th Battalion, 56th Artillery and 4-68 Artillery at Providence, Rhode Island. Inactivated at the
Rehoboth, Massachusetts Defense Area, 26 August 1960 or 25 September 1960. • Activated 1 May 1967 at
Fort Carson, Colorado. Headquarters and Headquarters Battery 11th Air Defense Artillery was inactivated 26 May 1967 at Fort Carson, Colorado. Activated 1 September 1971 at
Fort Bliss, Texas. Redesignated 15 March 1972 as Headquarters and Headquarters Battery,
11th Air Defense Artillery Group. Reorganized and redesignated 16 December 1980 as Headquarters and Headquarters Battery,
11th Air Defense Artillery Brigade. Headquarters and Headquarters Battery, 11th Antiaircraft Artillery Group was constituted 19 December 1942 in the Army of the United States as Headquarters and Headquarters Battery,
11th Antiaircraft Automatic Weapons Group. Activated 20 January 1943 at
Camp Davis, North Carolina. Redesignated 26 May 1943 as Headquarters and Headquarters Battery, 11th Antiaircraft Artillery Group. Inactivated 6 October 1945 in Germany. Allotted 9 December 1948 to the Regular Army. Activated 15 January 1949 at Fort Bliss, Texas. ==Recent history==