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BATTLE // August 18, 0636

Battle of Yarmouk

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Overview

The Battle of the Yarmuk was a major battle between the Byzantine Empire and the Rashidun Caliphate near the Yarmouk River in Byzantine Syria that marked a crucial point in the Muslim conquest of Syria. The result of the battle was a decisive Arab victory that effectively ended Byzantine rule in Syria.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The Battle of Yarmouk, fought near the Yarmouk River in Byzantine Syria, was a decisive engagement between the Rashidun Caliphate and the Byzantine Empire during the Muslim conquest of the Levant. The battle's outcome effectively ended Byzantine rule in Syria, making it a turning point not only in the immediate campaign but in the broader history of the region. The Rashidun forces, commanded by a large roster of senior commanders including Khalid ibn al-Walid, Abu Ubayda ibn al-Jarrah, and Amr ibn al-As, inflicted casualties on the Byzantine side recorded at between 70,000 and 120,000 — far exceeding their own losses of around 4,000 — against a Byzantine force that may have outnumbered them. The scale of the Byzantine collapse confirmed Rashidun dominance over Syria and opened the path for continued Muslim expansion into the Levant.

Forces & casualties

Troop strength

  • Rashidun Caliphate15,000–35,000
    medium
  • Byzantine Empire15,000–50,000
    medium

Byzantine Empire fielded a 1.3 : 1 numerical advantage

Casualties

  • Rashidun Caliphate4,000
    medium16% loss rate
  • Byzantine Empire70,000–120,000
    medium292% loss rate

Commanders (21)

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Last verified July 2026
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