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
First Army (Turkey) First Army (Turkey) The First Army of the Republic of Turkey () is one of the four field armies of the Turkish Army. Its headquarters is located at Selimiye Barracks in Istanbul. It guards the sensitive borders of Turkey with Greece and Bulgaria, including the straits Bosporus and Dardanelles. The First Army is stationed in East Thrace. Ali İhsan Sabis is the first commander of the 1st Army, which has been operating since the Ottoman Empire. The 1st army depends on the Turkish Land Forces. The army is responsible for the Thrace region, the straits and the safety of Istanbul.