Australian Imperial Force
The
Australian Imperial Force (AIF) was the name given to the military expeditionary force dispatched from
Australia to fight overseas during
World War I and
World War II. The units that made up the AIF were generally army and support units (medical, engineering, etc.) and, during World War I, the aviation units of the Australian Flying Corps (AFC). Today the two AIFs are distinguished by referring to the World War I contingent as the
1st AIF and the World War II contingent as the
2nd AIF.