With the conclusion of the war in the Pacific in 1945, Australia was committed to provide troops for occupation duties in Japan.

This brought about the raising of the 34th Australian Infantry Brigade with the major components being the 65th, 66th and 67th Australian Infantry Battalions. The 65th Battalion was raised out of 7th Division at Balikpapan and sailed to Morotai on HMS 303. By the middle of June 1946 the brigade was in place, with the 65th Battalion located at Fukuyama/Onomichi, 150km South of Osaka.

A major task ahead of 34 Brigade was the searching for and destruction of warlike equipments. Much of the area was honeycombed with caves and tunnels and large quantities of explosives, ammunition and poison gas were discovered.

The surveillance of Japanese elections in April 1946 was a most important task as well. In addition to this, there were a number of repatriation centres in the area which handled incoming Japanese nationals and outgoing Koreans and Formosans requiring close attention.

In line with the formative plan to raise an Interim Army, the battalions were re-designated as of the Australian Regiment in 1948, and in 1949 received the prefix “Royal”, becoming the Royal Australian Regiment .First Battalion was initially settled in at Ingleburn, later moved to Enoggera and Holsworthy and has finally found its home at Lavarack Barracks, Townsville.