The Seljuks Crush a Byzantine Army at Manzikert
A captured emperor and a shattered army open Anatolia to Turkish settlement
Quick facts
- Location
- Manzikert, Armenia (modern eastern Turkey)
- Byzantine emperor
- Romanos IV Diogenes, captured
- Seljuk sultan
- Alp Arslan
- Date
- 26 August 1071 CE
What happened
The Seljuk Turks, a nomadic people originally from the Central Asian steppe who had converted to Islam and built an empire spanning Iran, Iraq, and much of the Near East, spent the 1050s and 1060s raiding Byzantine territory in Anatolia and Armenia under Sultan Alp Arslan. In 1071 CE Byzantine emperor Romanos IV Diogenes led a large army, estimated by modern historians at 60,000 to 70,000 men, into Armenia to end the raids for good, but after splitting his forces near Lake Van he was left with roughly half his army when a rival general's contingent failed to engage. At Manzikert on 26 August 1071 CE, Alp Arslan's more mobile force encircled the Byzantine center after panic spread through the ranks on a false rumor of the emperor's death, and Romanos was captured after his horse was killed under him.
Why it matters
Manzikert did not cost Byzantium enormous territory or casualties immediately, but the psychological shock of an emperor's capture and the resulting Byzantine civil wars opened Anatolia to sustained Turkish settlement over the following decades, a process that permanently transformed the region's population and language. Historians treat it as the point after which the Byzantine Empire entered a long, largely irreversible decline in Asia Minor.
How we know
The battle's course, including the divided Byzantine command and the circumstances of Romanos's capture, is described in the World History Encyclopedia's dedicated article on Manzikert, which quotes the 11th-century Byzantine chroniclers Michael Psellos and Michael Attaleiates as primary eyewitness sources.
Sources
- World History Encyclopedia. Battle of Manzikert · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- World History Encyclopedia. Battle of Manzikert · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
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