Bulgarian–Byzantine War, 855

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Bulgarian–Byzantine War, 855

Year: 855
Location: Thrace and the Black Sea Coast
Ruler: Boris I

The year after Boris I's unsuccessful campaign against the German Kingdom ended, the Byzantine emperor Michael III began a war against Bulgaria.

The Bulgarian troops could not halt the Byzantine armies, which continued their advance. They recovered territories previously conquered by Bulgaria: Zagore, lands along the Black Sea coast, Nesebar, Plovdiv and extensive areas of Thrace.