The 4th Battalion, 12th Field Artillery Regiment (4/12th FA) has a distinguished history within the United States Army. Originally constituted in 1916, the 12th Field Artillery served with distinction in both World Wars. The 4th Battalion was activated during the Vietnam War and provided critical artillery support as part of the 199th Light Infantry Brigade, participating in major operations across III Corps Tactical Zone from 1966 to 1970. After Vietnam, the unit underwent several activations and inactivations, continuing its legacy as a vital component of U.S. Army artillery forces.