Battle of Heliopolis

Battle of Heliopolis
Part of the Arab conquest of Egypt
(Arab–Byzantine wars)
Date6 July 640 CE
Location
Near Heliopolis (now Ain Shams outside Cairo), Egypt
30°07′46″N 31°17′20″E / 30.129444°N 31.288889°E / 30.129444; 31.288889
Result Rashidun victory
Belligerents
Rashidun Caliphate Byzantine Empire
Commanders and leaders
Amr ibn al-As Theodore
Theodosius
Anastasius
Strength
15,000 20,000
Casualties and losses
Few Heavy
Location within Nile Delta
Battle of Heliopolis (Lower Egypt)
Battle of Heliopolis (Egypt)

The Battle of Heliopolis or Ayn Shams was a decisive battle in 640 between Arab Muslim armies and Byzantine Empire forces for the control of Egypt. Though there were several major skirmishes after this battle, it effectively decided the fate of the Byzantine rule in Egypt, and opened the door for the Muslim conquest of the Roman Exarchate of Africa.