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The Austro-Hungarian Empire declares war on Serbia.
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Australian Prime Minister Andrew Fisher declares that Australia will support Great Britain.
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Australian and New Zealand troops landed on the Gallipoli Peninsula.
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A final attempt made by the British to seize control of the Gallipoli peninsula from the Ottoman Empire.
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The British decide to evacuate Gallipoli, Suvla Bay and Cape Helles.
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The 25th of April is officially named ANZAC Day. Commemorative services are held across the Commonwealth.
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The Somme campaign in 1916 was the first great offensive of World War I for the British and it produced a more critical British attitude toward the war.
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The referendum asked if Australians would agree to a proposal requiring men undergoing compulsory training to serve overseas.
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Anzac troops capture the high ground south of Ypres after Allied tunnellers detonate 19 mines simultaneously under German positions at 3:10 am, killing 10,000 German troops.
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Germany signs the Armistice and fighting ceases on the Western Front. 61,513 Australians died and 152,000 were wounded.