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
Eastern Macedonia and Thrace prefectures, except for Thasos, which was part of the Kavala prefecture. Unlike the former prefectures, the regional units however have very limited administrative powers. Along with Central Macedonia, the region is supervised by the Decentralized Administration of Macedonia and Thrace based at Thessaloniki. The political post of the Regional governor () was also created in the course of the Kallikratis reform and can be considered the successor of the former prefects. The current governor is Christos Metios, who succeeded in November 2016 deceased Giorgos Pavlidis (Nea Dimokratia). Pavlidis was elected in the 2014 regional election, beating the incumbent first-ever regional