Soldiers using a periscope and a sniperscope on the beaches at Gallipoli. The Gallipoli campaign was a military campaign in the First World War that took place on the Gallipoli peninsula (Gelibolu in modern Turkey), from 17 February 1915 to 9 January 1916. The Entente powers, Britain, France and Russia, sought to weaken the Ottoman Empire, one of the Central Powers, by taking control of the Turkish straits.