The 2nd Battalion, 80th Field Artillery was constituted on 1 July 1916 in the
Regular Army as Troops C and D,
22nd Cavalry. It was reorganized on 21 June 1917 at
Fort Oglethorpe, Georgia and then consolidated, converted, and redesignated on 1 November 1917 as Battery B, 80th Field Artillery. On 10 September 1921, it was inactivated at
Camp George G. Meade, Maryland. On 12 October 1939, the battery was activated at Fort Lewis, Washington. On 1 October 1940, the 2-80 FA was reorganized and redesignated as Battery B, 80th Field Artillery Battalion. On 20 July 1947, it was inactivated in Korea. It was reactivated on 4 October 1950 at Fort Ord, California, where it was later inactivated on 3 April 1956. On 2 June 1958, 2-80 FA was redesignated as Headquarters and Headquarters Battery, 2nd Missile Battalion, 80th Field Artillery. The battalion activated 25 June 1958 at
Fort Sill, Oklahoma, where it later inactivated on 25 March 1963. In September 1971, it was redesignated as the 2nd Missile Battalion, 80th Field Artillery. On 28 February 1987, the 2-80 FA was reorganized and activated as the 2nd Battalion, 80th Field Artillery, consisting of three Basic Training and two Advanced Individual Training Batteries. Later it was reorganized to consist of four Army and one Marine Field Artillery Advanced Individual Training batteries. It became part of the Field Artillery Training Center. "In ..2004 the 2nd Battalion, 80th Field Artillery, the brigade’s AIT battalion, was inactivated and the 1-78 FA, the support battalion, was designated the AIT battalion and assigned to the 30th FA Regiment (now the 428th FA Brigade)." ==Training accident==