From 1962 to 1972. For further reading: The Battle of Coral; by Lex McAulay. Published in 1988.
On 28 April, 1965, Australian Prime Minister, Robert Menzies, announced that Australian troops would be sent to support the United States forces in the Vietnam war. The first Australian troops arrived in Vietnam in May 1965.
Australia sent a regiment of their Centurion tanks to Vietnam, along infantry and artillery.
Australian armor (Centurian tanks) and armored personnel carriers (US M-113's), as well as regular infantrymen were sent to Vietnam.
Mexican troops; Platoon 201
Australia began exiting the war in Vietnam in 1970 and most all troops were out of the country by 1973. They did briefly send troops back in 1975 to help Australian embassy workers evacuate during the Fall of Saigon.
They were drafted.
1962
The US.
NIXON
Over 50,000 Australians served in the war; consisting largely of infantrymen, sailors, and Centurion tank crewmen.
The Australian government.
1965