Constituted 8 March 1898 in the Regular Army as the 7th Regiment of Artillery. Organized 29 March 1898 at
Fort Slocum, New York under the command of Colonel
William Sinclair. Order of battle information shows that batteries of the regiment deployed outside the U.S. in the
Spanish–American War of 1898. However, no battle honors for this war are on the regiment's official lineage and honors certificate. Batteries C and M deployed to Puerto Rico. The regiment was broken up on 13 February 1901 and its elements reorganized and redesignated as separate numbered companies and batteries of the
Artillery Corps. Initially, only the regimental headquarters and headquarters battery (HHB), HHBs for 1st, 2nd, and 3rd Battalions, and Batteries A, B, D, & E active, HHB 3rd Battalion and Battery E being the
caretaking battery for the
Harbor Defenses of the Delaware (HD Delaware) at
Fort DuPont, Delaware. All other elements remained inactive. Headquarters and Headquarters Battery (HHB), 7th Coast Artillery, reconstituted 28 June 1950 in the Regular Army; concurrently consolidated with HHB, 7th Antiaircraft Artillery Group (see Annex 1), and consolidated unit designated as HHB,
7th Antiaircraft Artillery Group. Activated 20 January 1952 at
Fort Stewart, Georgia. Inactivated 15 January 1953 at Fort Stewart, Georgia. Activated 1 May 1954 in Korea. Inactivated 20 January 1955 in Korea. Activated l July 1955 in Greenland. Redesignated 20 March 1958 as HHB, 7th Artillery Group. Inactivated 20 December 1965 at
Fort Totten, New York. 1st Battalion, 7th Air Defense Artillery was activated on 13 September 1972 at
Fort Bliss, Texas and was inactivated there on 16 June 1987. The battalion was reactivated on 16 December 1988 in Germany. On 21 December 1998, Headquarters
United States Army Europe (USAREUR) announced plans to realign its air defense artillery units to comply with the Army's Patriot Standardization Plan. As a result of the plan, USAREUR realigned its 3
Patriot missile battalions with their 12 missile batteries, 2 maintenance companies and one maintenance team into 2 battalions with 5 batteries and one maintenance company each. The 1-7th Air Defense Artillery, with its Headquarters and Headquarters Battery and B and C Batteries subsequently moved from Rhine Ordnance Barracks,
Kaiserslautern, Germany, to Fort Bliss, Texas. There it joined the
108th Air Defense Artillery Brigade. A Battery, 1st Battalion, 7th ADA was assigned to the 5th Battalion, 7th ADA in
Hanau, Germany and moved from the Rhine Ordnance Barracks near
Kaiserslautern to
Babenhausen, Germany. F Battery, 6th Battalion,
52nd ADA, located at
Ansbach, was also assigned to the 5–7th ADA and moved to Babenhausen. These units were re-flagged as D Battery and E Battery, 5th Bn, 7th ADA. Now the battalion was stationed in Kaiserslautern, Germany, subordinate to the
10th Army Air & Missile Defense Command with five batteries and a maintenance company. In June 2006, the Headquarters and Headquarters Battery, 108th Air Defense Artillery Brigade and 1-7th Air Defense Artillery moved to
Fort Bragg, North Carolina. On 1 October 2015, the 5th Battalion, 7th Air Defense Artillery officially completed a unit move from Rhine Ordnance Barracks to
Baumholder, Germany. The move started in March 2015 and relocated all six units within the battalion to Smith Barracks in Baumholder.
Annex 1 (7th AAA Group) Constituted 5 August 1942 in the
Army of the United States as Headquarters and Headquarters Battery, 7th Antiaircraft Artillery Automatic Weapons Group (or 7th Coast Artillery Group (AA)). Activated 1 September 1942 at Camp Haan, California. Redesignated 26 May 1943 as Headquarters and Headquarters Battery, 7th Antiaircraft Artillery Group. Departed
Boston Port of Embarkation 1 July 1944; arrived in England 8 July 1944. Moved to France and the European Theater of Operations 28 September 1944. Departed Boston port of embarkation 7 April 1944; arrived in England 10 April 1944. Moved to France and the European Theater of Operations 14 July 1944. Located in Handorf, Germany in August 1945. Inactivated 31 December 1945 in Germany. Redesignated 13 October 1948 as the 26th Antiaircraft Artillery Automatic Weapons Battalion and allotted to the Regular Army. Assigned 20 March 1949 to the
24th Infantry Division and activated in Japan. ==Current units==