Battle of Achelous

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 Bulgarian and Byzantine forces. The Bulgarians obtained a decisive victory which not only secured the previous successes of Simeon I, but made him de facto ruler of the whole Balkan Peninsula, excluding the well-protected Byzantine capital Constantinople and the Peloponnese. The battle, which was one of the biggest and bloodiest battles of the European Middle Ages, was one of the worst disasters ever to befall a Byzantine army, and conversely one of the greatest military successes of Bulgaria. Among the most significant consequences was the official recognition of the imperial title of the Bulgarian monarchs, and the consequent affirmation of Bulgarian equality vis-à-vis Byzantium.

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917  Wikimedia, Wikidata
battle, First Bulgarian Empire, Byzantine Empire, 

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Location: 42.6431, 27.6367, KML, Cluster Map, Maps,
6 places

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0917-08-20T00:00:00Z

0917-08-20T00:00:00Z

917 Battle of Achelous

0708-01-01T00:00:00Z

0708-01-01T00:00:00Z

708 Battle of Anchialus

0763-07-04T00:00:00Z

0763-07-04T00:00:00Z

763 Battle of Anchialus

0814-01-01T00:00:00Z

0814-01-01T00:00:00Z

814 Battle of Mesembria

1941-12-06T00:00:00Z

1941-12-06T00:00:00Z

1941 Action of 6 December 1941

1341-09-01T00:00:00Z

1347-02-08T00:00:00Z

1341 — 1347 Byzantine Civil War of 1341–1347

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Frameless

Bulgarians defeat the Byzantines at Anchialos

Peak Biberna

Peak Biberna2

Byzantine army taking oath before the battle of Anchialus

Type	Subtype	Date	Description	Notes	Source
event	armed conflict	708	Battle of Anchialus	Byzantine Empire, battle, First Bulgarian Empire	Wikidata
event	armed conflict	763	Battle of Anchialus	Byzantine Empire, battle, First Bulgarian Empire	Wikidata
event	armed conflict	814	Battle of Mesembria	Byzantine Empire, First Bulgarian Empire, battle	Wikidata
event	armed conflict	917	Battle of Achelous	Byzantine Empire, battle, First Bulgarian Empire	Wikidata
event	armed conflict	1941	Action of 6 December 1941	naval battle	Wikidata
event	war	1341	Byzantine Civil War of 1341–1347	civil war	Wikidata
commons	image		Bulgarians defeat the Byzantines at Anchialos		Commons
commons	image		Peak Biberna		Commons
commons	image		Peak Biberna2		Commons
commons	image		Byzantine army taking oath before the battle of Anchialus		Commons