Australia's Involvement In WWII By WETBREAD Period: Sep 1, 1939 to Sep 2, 1945 WWII Sep 3, 1939 Australia delcared war on Germany Sep 15, 1939 Menzies announced the formation of the second Australian imperial force Oct 10, 1939 The first Australian air unit went into battle Jul 19, 1940 Australian ship "Sydney" (with British deystroyer squadron) engaged an Italian squadron Dec 9, 1941 The first RAAF aircraft was shot at by enemy forces Feb 3, 1942 The Australian force at Amdon was defeated by the Japanese landing Period: Feb 26, 1942 to Feb 26, 1944 Australia took part in the Pacific War Jul 21, 1942 Australia began the kokoda campaign Jul 28, 1942 Australia withdrew due to a loss from a confusing night battle Oct 24, 1942 The second battle of El Alamein began Feb 26, 1943 Australian commandos waged a guerilla campaign against the Japanese in portugese Timor Period: Nov 13, 1944 to Aug 19, 1945 Aitape Wewak Campaign