1st Antiaircraft Artillery Battalion[edit]

US 1st Coast Artillery Battalion reconstituted 21 June 1950 in the Regular Army as the 1st Coast Artillery Regiment to consist of the 1st and 2d Battalions; 1st and 2d Battalions concurrently redesignated as the US 1st Antiaircraft Artillery Battalion and US 54th Antiaircraft Artillery Battalions, respectively.
1st Antiaircraft Battalion redesignated 17 March 1955 as the 1st Antiaircraft Artillery Battalion (Missle) Activated 15 April 1955 at Irwin, Pennsylvania Inactivated 1 September 1958 at Irwin, Pennsylvania

1st Antiaircraft Artillery Battalion (Missle)[edit]

Headquarters and Headquarters Battery, US 1st Antiaircraft Artillery Group, and the US 1st Antiaircraft Artillery Battalion (Missle) and US 54th Antiaircraft Artillery Battalion (Missle) consolidated 19 March 1959 with the US 1st Field Artillery Battalion (organized in 1907) and consolidated unit reorganized and redesignated as the US 1st Artillery Regiment, a parent regiment under the Combat Arms Regimental System