Siege of Constantinople (674)

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First Arab Siege of Constantinople Part of the Byzantine-Arab Wars The Theodosian Walls of Constantinople, which proved impregnable during the siege Date 674-678 Location Constantinople Result Byzantine victory Belligerents Byzantine Empire Umayyad Caliphate Commanders Constantine IV Muawiyah I Strength Far fewer Estimates at 200,000 with Egyptian reinforcements Casualties and losses Unknown 150,000

v • d • e Byzantine-Arab Wars Early Conflicts Mutah – Tabouk – Dathin – Firaz Arab Conquest of Roman Syria Qarteen – Bosra – Ajnadayn – Marj-al-Rahit – Fahl – Damascus - Maraj-al-Debaj - Emesa - Yarmouk – Jerusalem - Hazir – Aleppo Arab Conquest of Roman Egypt Heliopolis – Nikiou Umayyad Conquest of North Africa Carthage Arab Invasions of Anatolia and Constantinople Iron Bridge - Kahramanmaraş – Masts – 1st Constantinople – Syllaeum – 2nd Constantinople – Akroinon Arab Campaigns in Southern Italy Later Byzantine Campaigns

The First Arab Siege of Constantinople in 674 was a major conflict of the Byzantine-Arab Wars, and was one of the numerous times Constantinople's defences were tested. It was fought between the Byzantine Empire and the Arab Umayyad Caliphate. Muawiyah I, who had emerged as the ruling dynasty of the Arab empire following the civil war, besieged Constantinople under Constantine IV. In this battle, the Umayyads, unable to breach the Theodosian Walls, blockaded the city along the Bosporus. The approach of winter forced the besiegers to withraw to an island 80 miles away.

Just prior to the siege, a Syrian Christian refugee named Kallinikos (Callinicus) of Heliopolis had invented for the Byzantine Empire a devastating new weapon that came to be known as "Greek fire". At the Battle of Syllaeum in 677, the Byzantine navy utilized it to decisively defeat the Umayyad navy in the Sea of Marmara, lifting the siege in 678. This victory halted the Umayyad expansion towards Europe for almost thirty years, although the Arabs would not be decisively defeated until the Second Arab siege of Constantinople.

The defeat can be attributed to two factors: the unbroken defences of the city, and the devastating winter. The naval victory that the Byzantines won ensured that the city could be resupplied by sea. Meanwhile, the Arab forces were beset with starvation in winter.

[edit] See also

• Byzantine-Arab Wars
• Constantinople
• Second Arab siege of Constantinople

[edit] References

• Turnbull, Stephen (2004). The Walls of Constantinople AD 413–1453. Osprey Publishing. ISBN 1-84176-759-X. 

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