2nd AIF

Second Australian Imperial Force
Members of the 9th Division parade at Gaza Airport in late 1942.
Active	1939–1947
Country	Australia
Branch	Australian Army
Role	Expeditionary warfare
Size	307,000
Nickname(s)	2nd AIF
Engagements	World War II Middle East North African Campaign Greece and Crete Campaigns Syria–Lebanon Campaign Pacific Malaya Campaign Dutch East Indies New Guinea Campaign Borneo Campaign
Commanders
Notable commanders	Sir Thomas Blamey

World War II

The Second Australian Imperial Force (Second, or 2nd, AIF) was the name given to the volunteer personnel of the Australian Army in World War II. Under the Defence Act (1903), neither the part-time Militia nor the full-time Permanent Military Force (PMF) could serve outside Australia or its territories unless they volunteered to do so. The Second AIF fought against Nazi Germany, the Kingdom of Italy, Vichy France and the Empire of Japan. After the war, Australia's wartime military structures were demobilised and the 2nd AIF was subsequently disbanded, although a small cadre of its personnel became part of the Interim Army that was established in 1947, and from which the Australian Regular Army was eventually formed in 1948.

At the outset of World War II, there was controversy over whether Australia should concentrate on forming an expeditionary force for overseas service to fight Germany in Europe or a home defence force to fight Japan. Prime Minister Robert Menzies decided to do both, although the experience of the Great War indicated that Australia did not have the resources to do either.

On 15 September 1939, Menzies announced the formation of the Second AIF, an expeditionary force of 20,000, to consist of one infantry division and any auxiliary units that the Australian Army could fit into it. On 15 November 1939, Menzies announced the reintroduction of conscription for home defence service effective 1 January 1940. Unmarried men turning 21 in the year ending 30 June 1940 would be drafted into the Militia. Because of this, the AIF could not accept personnel who were in reserved occupations.

Although the AIF had priority for scarce personnel and equipment over the Militia, many Militia commanders were understandably reluctant to release any to the AIF. Although the government had hoped that half of the new force would be drawn from the Militia, it was soon clear that this would not be achieved. The public was similarly torn between the dangers presented by Germany and Japan. After an initial rush, enlistments quickly tapered off. For these reasons, the Second AIF possessed only one division, the 6th Division, for nearly a year.