Greco-Turkish War (1919–1922)
The Greek campaign was launched primarily because the western Allies, particularly British Prime Minister David Lloyd George, had promised Greece territorial gains at the expense of the Ottoman Empire, recently defeated in World War I. The armed conflict started when the Greek forces landed in Smyrna (now Izmir), on 15 May 1919. They advanced inland and took control of the western and northwestern part of Anatolia, including the cities of Manisa, Balıkesir, Aydın, Kütahya, Bursa and Eskişehir. Their advance was checked at the Battle of Sakarya in 1921 by forces of the Turkish national movement. The Greek front collapsed with the Turkish counter-attack in August 1922, and the war effectively ended with the recapture of Smyrna by the Turkish forces and the Great Fire of Smyrna.
Alexander of Greece
Under the restored King Constantine I, whose return was endorsed overwhelmingly in a referendum, Greece went on to lose the Greco–Turkish War with heavy military and civilian casualties. The territory gained on the Turkish mainland during Alexander's reign was lost. Alexander's death in the midst of an election campaign helped destabilize the Venizelos regime, and the resultant loss of Allied support contributed to the failure of Greece's territorial ambitions. Winston Churchill wrote, "it is perhaps no exaggeration to remark that a quarter of a million persons died of this monkey's bite."