Following Britain's declaration of war on Germany on 4 August 1914, Australia and the other members of the British Empire were also at war. The first Australian to perish on the Western Front was Lieutenant William Malcolm Chisholm of the Lancashire Regiment, who died in the Battle of Le Cateau in France on 26 August 1914. Closer to home, Australian troops secured German New Guinea and the Bismarck Archipelago in September–October 1914. Australians landed on the Gallipoli Peninsula in Turkey on 25 April 1915. By October 1915, Australia had lost 7,279 men in the Gallipoli Campaign and thousands more were wounded. Although Australian troops were withdrawn from Gallipoli by 20 December 1915, more recruits were needed in the Middle East and on the Western Front.