Gallipoli Peninsula, Lat. Chersonesus Thracica, narrow peninsula, c.50 mi (80 km) long, W Turkey, extending southwestward between the Aegean Sea and the Dardanelles. The port of Gallipoli gives it its name. It was the scene of the Gallipoli campaign of 1915 and was (1920–36) part of the demilitarized Zone of the Straits.
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