Originally established in 1965, 5th Battalion served two tours of South Vietnam before it was reorganised and linked with the 7th Battalion to form 5th/7th Battalion, Royal Australian Regiment (5/7 RAR), in 1973.

In late 2006, the two battalions were reorganised and de-linked. 5th Battalion, Royal Australian Regiment (5 RAR), again joined the Australian Army's order of battle in its own right. 5 RAR has since served in Iraq, Timor-Leste (East Timor) and Afghanistan.

The 5th Battalion, Royal Australian Regiment, motto is ‘Duty first’.

Unit Teamspeak Server Address: IP: 27.50.70.178:10344
5 RAR Recruiting Server - TFAR Active Address: Server IP: 103.43.75.7:2312