The Armistice of Mudanya was signed on 11 October. By its terms, the Greek army would move west of the Maritsa, clearing Eastern Thrace to the Allies. The famous American author Ernest Hemingway was in Thrace at the time, and he covered the evacuation of Eastern Thrace of its Greek population. He has several short stories written about Thrace and Smyrna, which appear in his book "In Our Time". The agreement came into force starting 15 October. Allied forces would stay in Eastern Thrace for a month to assure law and order. In return, Ankara would recognise continued British occupation of Constantinople and the Straits zones until the final treaty was signed.