Compléter Gallipoli CampaignVersion en ligne An unsuccessful military campaign during WW1. par Alfonso Poza 1 With World War I on the Western Front by 1915 , the Allied Powers were debating going on the offensive in another region of the conflict , rather than continuing with attacks in and France . Russia appealed to UK for aid in confronting a invasion in the Caucasus . ( The Empire had entered World War I on the side of Germany and Austria - , by November 1914 . ) In response , the Allies decided to launch a naval expedition to the Dardanelles Straits , a narrow passage connecting the Aegean Sea to the Sea of Marmara in northwestern Turkey . If , capture of the straits would allow the Allies to link up with the Russians in the Black Sea , where they could work together to push Turkey out of the war . The Gallipoli Campaign of 1915 - 16 was an attempt by the Allied Powers to control the sea route from Europe to Russia during World War I . A major land invasion of the Gallipoli Peninsula involved British and French troops as well as divisions of the Australian and New Zealand Army Corps ( ) . Lack of sufficient and knowledge of the terrain , along with a fierce Turkish resistance , hampered the success of the invasion . By mid - October , Allied forces had heavy losses . Evacuation began in December 1915 at a great human lost .
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