Where was the Gallipoli campaign fought in WWI?

The Gallipoli campaign was fought in Turkey, on the Gallipoli Peninsula and around the Dardanelles during World War I. At the time, the territory was part of the Ottoman Empire, which is why older sources may describe the location as Ottoman Turkey.

The campaign began with an Allied attempt to force the Dardanelles, the narrow strait linking the Aegean Sea with the Sea of Marmara. Britain and France hoped to threaten Constantinople, the Ottoman capital, open a supply route to Russia, and weaken the Ottoman Empire. After the naval attack failed, Allied troops landed on the peninsula on April 25, 1915.

The fighting became a prolonged trench campaign involving British, French, Australian, New Zealand, Indian, and Newfoundland forces against Ottoman defenders. The Allies eventually evacuated, completing the withdrawal in January 1916. Gallipoli was an Ottoman victory and became especially important to Turkish national memory because Mustafa Kemal, later Atatürk, rose to prominence there. It also helped shape modern Australian and New Zealand identity through the ANZAC commemoration.