The Battle of Hamburger Hill was a battle of the Vietnam War that was fought by U.S. Army and Army of the Republic of Vietnam (ARVN) forces against People's Army of Vietnam (PAVN) forces from 10 to 20 May 1969 during Operation Apache Snow. Although the heavily fortified Hill 937 was of little strategic value, U.S. command ordered its capture by a frontal assault, only to abandon it soon thereafter. The action caused a controversy both in the American military and public.