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Key Dates

• Early 1915 - In response to Russia's request for military support, the British government sanctions a plan to attack the Ottoman Empire, intended to knock the Ottomans out of the war and create a supply route to Russia.

• 18 March 1915 - 18 March 1915 - British and French warships attempt to force their way through the Dardanelles straits but come under fire from gun batteries ashore. Three battleships are sunk by mines, and the naval attack is abandoned.

• 25 April 1915 - The British 29th Division lands on five beaches around Cape Helles, and the Australian and New Zealand Army Corps (ANZAC) lands at Z Beach, later known as Anzac Cove, aiming to advance quickly and take control of the forts guarding the Dardanelles. Fierce Ottoman resistance means that they cannot advance beyond their footholds, and trench warfare ensues.

• 6 August 1915 - The Allies launch a major offensive intended to break the deadlock. Reinforcements land at Suvla Bay, aiming to outflank Ottoman positions. New Zealand troops lead an attack on the slopes of Chunuk Bair, supported by attacks by Australian forces at Lone Pine and the Nek. The offensive fails and by autumn the Allies begin to plan for evacuation.  

• 9 January 1916 - the last Allied soldiers leave the peninsula.