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1921
German New Guinea, which had been under Australian Military rule since its seizure in 1914, was transferred to Australian Civil Administration under a League of Nations Mandate.
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1943
A Royal Australian Air Force base on Millingimbi Island, off the coast of the Northern Territory’s Arnhem Land, was bombed by Japanese aircraft.
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1956
The aircraft carrier HMAS Melbourne (III) arrived in Sydney Harbour to begin duties as flagship of the Australian fleet. Thousands turned out to welcome her.