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The Landing at Gaba Tepe, which took place on 25 April 1915, was an amphibious invasion of the Gallipoli Peninsula by Entente forces, mostly composed of the ANZAC (Australian and New Zealand Army Corps). It began the land phase of the Gallipoli Campaign, in which troops planned to overtake the Ottoman forts that controlled the passage of the Dardanelles strait. However, the campaign as a whole proved a failure, with many thousands of casualties and an eventual evacuation in January 1916, which led the Ottomans to consider it a great – if temporary – victory. 25 April is now commemorated in Australia and New Zealand as a national day of remembrance known as Anzac Day.