Ottoman Greeks
Around 1.5 million Ottoman Greeks remained in the Ottoman Empire after losses of 550,000 during WWI. Almost all, 1,250,000, except for those in Constantinople, had fled before or were forced to go to Greece in 1923 in the population exchanges mandated by the League of Nations after the Greco-Turkish War (1919–1922). The lingual Turkification of Greek-speakers in 19th-century Anatolia is well documented. According to Speros Vryonis the Karamanlides are the result of partial Turkification that occurred earlier, during the Ottoman period. Fewer than 300,000 Armenians remained of 1.2 million before the war; fewer than 100,000 of 400,000 Assyrians.