Army of the Republic of Vietnam references on wikipedia
Army_of_the_Republic_of_Vietnam The Army of the Republic of Vietnam (ARVN) was the land-based military forces of the Republic of Vietnam (South Vietnam), which existed from October 26 1955 until the fall of Saigon on April 30 1975. The ARVN is often erroneously used as a collective term to refer to all South Vietnamese military forces, including the Vietnam Air Force and Republic of Vietnam Navy. They are estimated to have suffered 1,170,000 casualties during the Vietnam War.