1st Brigade is a combined arms formation of the
Australian Army. Raised for service initially in 1914 for service during World War I, the brigade fought at
Gallipoli and on the
Western Front before being disbanded in mid-1919. In 1921, the 1st Brigade was re-raised as a unit of Australia's part-time military forces, based in
New South Wales. During World War II the brigade undertook defensive duties before being disbanded. In 1948, it was re-raised as an integral part of the Australian Regular Army. Currently the brigade is based at
Robertson Barracks in
Darwin and at
RAAF Base Edinburgh near
Adelaide, South Australia. It is the first of the Australian Army brigades to be re-organised as a combat brigade under
Plan Beersheba.