Western Thrace Montenegro) fought against the Ottoman Empire and annexed most of its European territory, including Thrace. Western Thrace was occupied by Bulgarian troops who defeated the Ottoman army. On November 15, 1912 on the right bank of the river Maritza Macedonian-Adrianopolitan Volunteer Corps captured the Turkish corps of Yaver Paha, which defends the Eastern Rhodopes and Western Thrace from invading Bulgarians. The victors quickly fell into dispute on how to divide the newly conquered lands, resulting in the Second Balkan War. In August 1913 Bulgaria was defeated, but gained Western Thrace under the terms of the Treaty of Bucharest. In the
Western Thrace forced respective minority populations in the Thrace region out of areas they controlled. A large population of Greeks in Eastern Thrace, and Black Sea coastal and southern Bulgaria, was expelled south and west into Greek-controlled Thrace. Concurrently, a large population of Bulgarians was forced from the region into Bulgaria by Greek and Turkish actions. Turkish populations in the area were also targeted by Bulgarian and Greek forces and pushed eastward. As part of the Treaty of Neuilly, and subsequent agreements, the status of the expelled populations was legitimized. This was followed by a further population exchange which radically changed the