How many Australians served in WW2?
Military history of Australia during World War II
almost a million
Australia entered World WarII on 3 September 1939, following the government's acceptance of the United Kingdom's declaration of war on Nazi Germany. Following attacks on Allied countries, the Australian government later declared war on other members of the Axis powers, including the Kingdom of Italy (11 June 1940) and the Empire of Japan (8 December 1941).  By the end of the war, almost a million Australians had served in the armed forces, whose military units fought primarily in the European theatre, North African campaign, and the South West Pacific theatre. In addition, Australia came under direct attack for the first time in its post-colonial history. Its casualties from enemy action during the war were 27,073 killed and 23,477 wounded.[1]