During the First Balkan War, on 20 October 1912, Tenedos was the first island of the north Aegean that came under the control of the Greek Navy.
The Turks that constituted part of Tenedos' population did not welcome the Greek control.
By taking over the islands in the Northern Aegean sea, the Greek Navy limited the ability of the Ottoman fleet to move through the Dardanelles.
Greek administration of the island lasted until 12 November 1922.

Negotiations to end the Balkan war started in December 1912 in London and the issue of the Aegean islands was one persistent problem.
The issue divided the great powers with Germany, Austria-Hungary, and Italy supporting the Ottoman position for return of all the Aegean islands and Britain and France supporting the Greek position for Greek control of all the Aegean islands.
With Italy controlling key islands in the region, major power negotiations deadlocked in London and later in Bucharest.
Romania threatened military action with the Greeks against the Ottomans in order to force negotiations in Athens in November 1913.
Eventually, Greece and Great Britain pressured the Germans to support an agreement where the Ottomans would retain Tenedos, Kastelorizo and Imbros and the Greeks would control the other Aegean islands.
The Greeks accepted the plan while the Ottoman Empire rejected the ceding of the other Aegean islands.
This agreement would not hold, but the outbreak of World War I and the Turkish War of Independence put the issue to the side.

During the World War I Gallipoli Campaign, the British used the island as a supply base and built a 600m long airstrip for military operations.

After the Turkish War of Independence ended in Greek defeat in Anatolia, and the fall of Lloyd George and his Middle Eastern policies, the western powers agreed to the Treaty of Lausanne with the new Turkish Republic, in 1923.
This treaty made Tenedos and Imbros part of Turkey, and it guaranteed a special autonomous administrative status there to accommodate the local Greek population.
The treaty excluded the Orthodox Christians on the islands from the population exchange that took place between Greece and Turkey.
Article 14 of the treaty provided specific guarantees safeguarding the rights of minorities in both the nations.

In 1912, when the Ecumenical Patriarchate of Constantinople conducted its own census, the population of the island was estimated to be: 5,420 Greeks and 1,200 Turks.
During the First Balkan War, on 20 October 1912, Tenedos was the first island of the north Aegean that came under the control of the Greek Navy. The Turks that constituted part of Tenedos' population did not welcome the Greek control. By taking over the islands in the Northern Aegean sea, the Greek Navy limited the ability of the Ottoman fleet to move through the Dardanelles. Greek administration of the island lasted until 12 November 1922.
Negotiations to end the Balkan war started in December 1912 in London and the issue of the Aegean islands was one persistent problem. The issue divided the great powers with Germany, Austria-Hungary, and Italy supporting the Ottoman position for return of all the Aegean islands and Britain and France supporting the Greek position for Greek control of all the Aegean islands. With Italy controlling key islands in the region, major power negotiations deadlocked in London and later in Bucharest. Romania threatened military action with the Greeks against the Ottomans in order to force negotiations in Athens in November 1913. Eventually, Greece and Great Britain pressured the Germans to support an agreement where the Ottomans would retain Tenedos, Kastelorizo and Imbros and the Greeks would control the other Aegean islands. The Greeks accepted the plan while the Ottoman Empire rejected the ceding of the other Aegean islands. This agreement would not hold, but the outbreak of World War I and the Turkish War of Independence put the issue to the side.
During the World War I Gallipoli Campaign, the British used the island as a supply base and built a 600m long airstrip for military operations.
After the Turkish War of Independence ended in Greek defeat in Anatolia, and the fall of Lloyd George and his Middle Eastern policies, the western powers agreed to the Treaty of Lausanne with the new Turkish Republic, in 1923. This treaty made Tenedos and Imbros part of Turkey, and it guaranteed a special autonomous administrative status there to accommodate the local Greek population. The treaty excluded the Orthodox Christians on the islands from the population exchange that took place between Greece and Turkey. Article 14 of the treaty provided specific guarantees safeguarding the rights of minorities in both the nations.
In 1912, when the Ecumenical Patriarchate of Constantinople conducted its own census, the population of the island was estimated to be: 5,420 Greeks and 1,200 Turks.
Tenedos