After undergoing major reorganizations in 1957 and 1963 to adapt to changing tactics, the division deployed to South Vietnam to fight in the Vietnam War between late 1965 and early 1966. The 25th served in Vietnam until its withdrawal back to Hawaii in 1970–1971, participating in Operation Attleboro, Operation Cedar Falls, Operation Junction City, the Battle of Saigon during the North Vietnamese Tet Offensive, and the Cambodian Incursion. It was reorganized as a light infantry division in 1985, and elements have participated in the Iraq War and the War in Afghanistan.