In 1973, it was linked with 2 RAR to form 2/4 RAR , based in Townsville, before being delinked in 1995.
Deployed in 2001 and 2006 for peacekeeping and stability operations. In 1973, it was linked with 2 RAR
Provided Special Operations Task Groups and security detachments, earning the Unit Citation for Gallantry for its performance in Afghanistan between 2005 and 2006. Transition to Special Operations based in Townsville
4 RAR served two tours in South Vietnam (1968–1969 and 1971–1972) as part of the 4 RAR/NZ (ANZAC) battalion, which included New Zealand infantry companies. In 1973, it was linked with 2 RAR
Deployed to Malaysia and Borneo, the battalion conducted "Claret" operations and security patrols to defend against incursions.
The last major battle involving Australian and New Zealand ground troops in Vietnam.