Ameical Div. 1:20th

The 1st Battalion, 20th Infantry Regiment (1/20th), served as part of the 11th Infantry Brigade within the Americal Division (23rd Infantry Division) during the Vietnam War. Reactivated in 1967, the battalion deployed to Vietnam and operated primarily in the Quang Ngai Province, engaging in counterinsurgency operations against Viet Cong and North Vietnamese Army forces. The 1/20th gained notoriety due to its involvement in the My Lai Massacre in March 1968, one of the war’s most controversial incidents. Throughout its deployment, the battalion conducted search-and-destroy missions, security patrols, and pacification efforts until the Americal Division’s withdrawal from Vietnam in 1971.