 In 1966 Haig took command of a battalion of the 1st Infantry Division in Vietnam.On May 22, 1967, Lieutenant Colonel Haig was awarded the Distinguished Service Cross, the U.S. Army's second highest medal for valor, by General William Westmoreland as a result of his actions during the Battle of Ap Gu in March 1967.During the battle, Haig's troops (of the 1st Battalion, 26th Infantry Regiment) became pinned down by a Viet Cong force that outnumbered U.S. forces by three to one.