Tet Offensive and aftermath
Easter Offensive (1972)
Post-Paris Peace Accords (1973–1974)
Operation Diamond Head was an operation conducted by the 3rd Brigade, 25th Infantry Division in Tây Ninh Province, lasting from 11 July to 31 October 1967.
In May U.S. intelligence located a People's Army of Vietnam (PAVN) supply base in the Angel's Wing area of Cambodia's Svay Rieng Province and learned that a two battalion attack would be made from this sanctuary into Tây Ninh Province in July.