 The full extent of casualties on that first day are not known . Birdwood , who did not come ashore until late in the day , estimated between three and four hundred dead on the beaches . The New Zealand Ministry for Culture and Heritage claims one in five of the three thousand New Zealanders involved became a casualty . The Australian War Memorial has 860 Australian dead between 25 – 30 April , and the Australian Government estimates 2 @,@ 000 wounded left Anzac Cove on 25 April , but more wounded were still waiting on the <unk> to be evacuated . The Commonwealth War Graves Commission documents that 754 Australian and 147 New Zealand soldiers died on 25 April 1915 . A higher than normal proportion of the ANZAC casualties were from the officer ranks . One theory was that they kept exposing themselves to fire , trying to find out where they were or to locate their troops . Four men were taken prisoner by the Turks . 
