October 11, 1922

Armistice of Mudanya

Mudanya Armistice signed by Turkish and Allied representatives

The agreement that ended the fighting carries no Greek signature. Athens accepted it three days after it was signed.

Four generals, no Greek delegate

At Mudanya on the Sea of Marmara on 11 October 1922, İsmet Pasha signed an armistice for the Ankara government with the British, French and Italian military representatives — Generals Charles Harington, Georges Charpy and Ernesto Mombelli — after negotiations held from 3 to 11 October.

Greece did not sign. Its representatives had not participated directly in the talks, and the Greek government accepted the armistice on 14 October.

Contemporary reports differ over whether the final signing happened shortly before midnight on 10 October or before dawn on the 11th; the accepted treaty date is 11 October.

Eastern Thrace, without another battle

The terms required the Greek army to evacuate Eastern Thrace within fifteen days, with civil administration passing to Turkey under temporary Allied supervision over the thirty days after that.

The agreement converted Turkey's battlefield victory in Anatolia into a commitment that Eastern Thrace would be returned without another Turkish–Greek battle there.

It entered into force at midnight on 14–15 October, once Greece had accepted.

An armistice, not the settlement

This was not the Treaty of Lausanne. Lausanne was signed on 24 July 1923 and the Republic of Turkey was proclaimed separately on 29 October 1923, so Lausanne could not have recognised an already existing republic.

Greece did not return to its pre-war borders either. It kept Western Thrace, acquired after the First World War, while surrendering Eastern Thrace, and Lausanne adjusted the border near Karaağaç.

The compulsory population-exchange convention was a separate instrument signed at Lausanne on 30 January 1923, and it expressly exempted established Greeks of Constantinople and Muslims of Western Thrace.

Sources

Researched 24 Aug 2026 6 sources not yet audited

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What the sources leave uncertain

The convention is formally dated 11 October 1922. Greek accounts may also give 28 September under the Julian calendar then used in Greece.
Contemporary reports differ over whether the final signing occurred shortly before midnight on 10 October or before dawn on 11 October, but the accepted treaty date is 11 October.
Calling 11 October the exact day the war 'ended' is imprecise: Greece accepted on 14 October, the armistice took effect on 15 October, and the final peace treaty was signed in 1923.