The Battle of Achelous or Acheloos, also known as the Battle of Anchialus, took place on 20 August 917, on the Achelous river near the Bulgarian Black Sea coast, close to the fortress Tuthom between B
Bulgarian troops seizing Adrianople
Zoe of Byzantium and her son, emperor Constantine VII
The oath of the Byzantine soldiers on the eve of the battle
The Bulgarian victory at Anchialus
The Byzantine–Bulgarian wars were a series of conflicts fought between the Byzantine Empire and the Bulgarian Empire which began already in the late 5th century when the Bulgars defeated a 15.000 Roma
Battle of Achelous (917)
…making him have no sufficient forces to fight on both sides at the same time. The Battle of Achelous was one of the most important battles in the long Byzantine–Bulgarian Wars. It secured the concession of the Imperial title to the Bulgarian rulers, and thereby firmly established Bulgaria's role as a key player in Europe…
Clockwise from top-left: Emperor Nikephoros II Phokas; The Battle of Anchialus; Khan Omurtag; The rulers of Bulgaria and Byzantium negotiate for peace.
Menologium. Bulgarian pagans killing the Christians (Byzantines)
Krum assembles his army to defeat the Byzantines
Omurtag sends delegation to the Byzantines