5th Battalion, The Royal Australian Regiment (5RAR) was raised at Holsworthy Barracks in Sydney on the 1st of March 1965. It comprised Echo Company 1 RAR and a surplus of 1RAR soldiers.
The battalion served two tours in the Republic of South Vietnam and elements of 5 RAR have seen service in RCB Malaysia, Rwanda, East Timor, Timor Leste, Solomons, Iraq and Afghanistan. The battalion is currently Located at Robertsons Barracks Darwin. (As at 2024).