PLEnlist

20 August in military history: the Battle of Anchialus, 917

Military history · 20 August · Byzantine-Bulgarian warsFull calendar

Map marking the battle site: the Achelous (Aheloy) river near Anchialus, today Pomorie, on the Black Sea coast of Bulgaria
Location: the Achelous (Aheloy) river near Anchialus, today Pomorie, on the Black Sea coast of Bulgaria. Location map: © Echoes of Battle (data: Natural Earth, public domain)
Quick answer

On 20 August 917, the date given by Theophanes Continuatus and its sister chronicles, the army of Simeon I of Bulgaria routed a Byzantine army under Leo Phokas by the river Achelous, near the fortress of Anchialus, today Pomorie on Bulgaria's Black Sea coast. John Skylitzes dates the battle to 6 August instead. The empire had made peace in the east to throw its forces at Bulgaria, and the chroniclers describe a promising start that collapsed into flight and slaughter. Leo Phokas escaped; several of his commanders did not. No Byzantine source says how many men fought or died, and the large figures sometimes quoted come from an Arab writer whose story may describe a different war.

The Battle of Anchialus, 917: Byzantium's bloody disaster

20 August 917 · 1109 years ago

At the Battle of Anchialus on 20 August 917, Tsar Simeon I of Bulgaria crushed a large Byzantine army led by Leo Phokas near the Black Sea coast. The Byzantine attack began well, but a Bulgarian counterattack turned the day into a rout and then a massacre.

Read the full story of The Battle of Anchialus, 917: Byzantium's bloody disaster ›

Battle of Saragossa, 1710: the allies take back Aragon

20 August 1710 · 316 years ago

Near Zaragoza, the Bourbon Spanish army of the Marquis de Bay was badly beaten by Guido Starhemberg's allied forces in the War of the Spanish Succession. The victory opened Madrid to Archduke Charles, but the allies soon had to leave the capital and were defeated.

Read the full story of Battle of Saragossa, 1710: the allies take back Aragon ›

Also on this day

1794: Major General Anthony Wayne reported victory over "the combined force of the hostile Indians, and a considerable number of the volunteers and militia of Detroit" on the Miami, today's Maumee, near the British post at the foot of the rapids. Lieutenant Boyer's journal records the same fight near the British garrison. Wayne described ground "covered with old fallen timber, probably occasioned by a tornado". According to two entries in the Dictionary of Canadian Biography, the Shawnee chief Blue Jacket had taken command from Little Turtle. Wayne put the enemy "from every account" at 2,000 combatants and his troops actually engaged at short of 900; Boyer gives the most general opinion as 1,500, a third of them thought to be Canadians. The adjutant general's return printed with Wayne's report lists 33 killed and 100 wounded, 133 dead and wounded in all. Boyer counts 30 killed and 100 wounded, and 40 enemy dead left on the field. The National Park Service calls the battle the ending event in the struggle for dominance in the Old Northwest Territory; the battlefield lies in Maumee, Ohio, 0.25 mile north of the state monument and of the site formerly thought to be the field.1

Frequently asked questions

Who won the Battle of Anchialus in 917?

The Bulgarians under Simeon I. The chronicles say the Byzantine army of Leo Phokas was routed by the river Achelous with heavy losses; Leo Phokas escaped to Mesembria, while Constantine Lips and John Grapson were killed.

When was the Battle of Anchialus fought?

Theophanes Continuatus and its sister chronicles give 20 August of the fifth indiction, 917. Skylitzes gives 6 August.

How many soldiers fought at Anchialus?

No Byzantine source says. Large figures come from al-Masudi, whose story of a city called Walandar Marquart links to a raid of 934; Leszka calls the figures worthless and estimates 15,000 to 25,000 men on each side.

Why did the Byzantine army break?

Skylitzes gives two stories: Leo Phokas's riderless horse made the troops think he had fallen, or a rumor that Romanos Lekapenos was sailing off to seize the throne made Phokas turn back. Leo the Deacon tells only the rumor.

Notes

A number in the text points to a note; each note names the works that paragraph draws on, listed in full under Sources.

  1. Anthony Wayne to the Secretary of War, “American State Papers”; National Park Service, “Fallen Timbers Battlefield and Fort Miamis National Historic Site”; Lieutenant Boyer, “A Journal of Wayne's Campaign”; Reginald Horsman, “Weyapiersenwah (Blue Jacket)”; Herbert C. W. Goltz, “Michikinakoua (Little Turtle)”. ↩

Sources

Battle honors of your homeland

The turning points of history

Marathon, Gaugamela, Cannae, Constantinople, Waterloo, Stalingrad: the days the world changed course.

Based on your country, which we do not store · why? ·

Relive the great battles

Echoes of Battle brings the great battles of history to life, scene by scene on the real map. Enlist below and we will send word to your inbox the day it launches.

Or supply the campaign on Ko-fi ›