Conflicts & Resolutions · Battle

Battle of Achelous

917 · 10th century · Also known as Battle of Anchialus (917) · Part of the Byzantine–Bulgarian war of 913–927

The Battle of Achelous was fought on 20 August 917 by the river Achelous, near Anchialus on the Black Sea coast of present-day Bulgaria. Tsar Simeon I of Bulgaria destroyed a large Byzantine army under Leo Phokas, one of the heaviest defeats in Byzantine history. The victory left Bulgaria the dominant power in the Balkans for the rest of Simeon's reign.

Battle of Achelous
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First Bulgarian EmpireMilitary, Summary

See also

Cite this entry
APA
The Epoch Institute. (2026). Battle of Achelous. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/battle-of-achelous
MLA
“Battle of Achelous.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/battle-of-achelous. Accessed .
Chicago
The Epoch Institute. “Battle of Achelous.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/battle-of-achelous.
Harvard
The Epoch Institute (2026) ‘Battle of Achelous’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/battle-of-achelous (Accessed: ).

Last reviewed October 2026Random entry ↻