In 1915 British and Imperial forces landed on the Gallipoli Peninsula in an attempt to eliminate Turkey from the war. What name was given to the strait separating European Turkey from Asiatic Turkey, over which they hoped to seize control?

In 1914 the Ottoman Empire joined the Central Powers, while in the following year Italy joined the Western Allies.  These developments added at least two more fronts - the Alps and the Balkans - to the existing Western and Eastern Fronts.