Italian colonists in the Dodecanese especially in Rhodes and Leros. The Kingdom of Italy occupied the Dodecanese Islands in the Aegean sea during the Italian-Turkish war of 1911. In the 1919 Venizelos-Tittoni Agreement, Italy promised to cede the overwhelmingly Greek-inhabited islands, except Rhodes, to Greece, but this treaty was never implemented due to the Greek catastrophe in Asia Minor. With the Treaty of Lausanne in 1923, the Dodecanese was formally annexed by Italy, as the "Possedimenti Italiani dell'Egeo". In the 1930s, Mussolini embarked on a program of Italianization, hoping to make the island of Rhodes a modern transportation hub that would serve as a focal
Dodecanese territories, occupied all the present-day Dodecanese except for Kastellorizo. After the end of the war according to the Treaty of Ouchy, Italy maintained the occupation of the islands as guarantee for the execution of the treaty. The occupation continued after Italy declared war on the Ottoman Empire (21 August 1915) during the First World War. During the war, the islands became an important naval base for Britain and France; Italy was allied with both nations during World War I. The Dodecanese were used as a staging area for numerous campaigns, most famously the one at Gallipoli. Some of the smaller