Turkey had entered the war on the German side on 31 October 1914. One of its first acts was to close the Dardanelles Straits to the Allies. In April 1915, following the failure of the Royal Navy's attempt to capture the Dardanelles, British and ANZAC forces landed on the Gallipoli peninsula, under the command of General Ian Hamilton. The main British attacks were the first, second and third battles of Krithia. These were a series of attacks against the Turkish defences aimed at capturing the original objectives of 25 April 1915. They all failed to achieve their objectives. In August, another landing was made at Suvla Bay. The Suvla landing was reinforced by the arrival of the 10th Division from Kitchener's New Army, 53rd, 54th first-line Territorial divisions and the dismounted yeomanry of the 2nd Mounted Division. The 29th Division was also moved from Helles to Suvla for one more push. The final British attempt to resuscitate the offensive came on 21 August, with attacks at Scimitar Hill and Hill 60. Control of these hills would have united the Anzac and Suvla fronts, but neither battle achieved success. When fighting at Hill 60 ceased on 29 August, the battle for the Sari Bair heights, and indeed, the battle for the peninsula, was effectively over; by January 1916, the Allies had withdrawn.