Ottoman Empire part of Central Powers
World War I
The Ottoman Empire entered World War I on the side of the Central Powers and was ultimately defeated. The Ottoman participation in the war began with the combined German-Ottoman surprise attack on the Black Sea coast of the Russian Empire on 29 October 1914. Following the attack, the Russian Empire (2 November 1914) and its allies France (5 November 1914) and the British Empire (5 November 1914) declared war on the Ottoman Empire (also on 5 November 1914, the British government changed the status of the Khedivate of Egypt and Cyprus, which were de jure Ottoman territories prior to the war, as British protectorates.)
The Ottomans successfully defended the Dardanelles strait during the Gallipoli campaign (1915–1916) and achieved initial victories against British forces in the first two years of the Mesopotamian campaign, such as the Siege of Kut (1915–1916); but the Arab Revolt (1916–1918) turned the tide against the Ottomans in the Middle East. In the Caucasus campaign, however, the Russian forces had the upper hand from the beginning, especially after the Battle of Sarikamish (1914–1915). Russian forces advanced into northeastern Anatolia and controlled the major cities there until retreating from World War I with the Treaty of Brest-Litovsk following the Russian Revolution in 1917.
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