1963    The Buddhist crisis: Soldiers of the Army of the Republic of Vietnam attack protesting Buddhists in Huế, South Vietnam, with liquid chemicals from tear gas grenades, causing 67 people to be hospitalised for blistering of the skin and respiratory ailments.

1963    Buddhist crisis: As a result of the Xa Loi Pagoda raids, the US State Department cables the US Embassy in Saigon to encourage Army of the Republic of Vietnam generals to launch a coup against President Ngo Dinh Diem if he did not remove his brother Ngo Dinh Nhu.

1967    Vietnam War: United States Marine Corps and ARVN troops launch "Operation Deckhouse Five" in the Mekong River delta.

1971    The Army of the Republic of Vietnam abandon an attempt to cut off the Ho Chi Minh trail in Laos.

1975    General Cao Van Vien, chief of the South Vietnamese military, departs for the US as the North Vietnamese Army closed in on victory.