| Siege of Babylon Fortress | |||||||
|---|---|---|---|---|---|---|---|
| Part of the Muslim conquest of Egypt (Arab–Byzantine Wars) | |||||||
 Remains of the Babylon Fortress. | |||||||
| |||||||
| Belligerents | |||||||
| Rashidun Caliphate | Byzantine Empire | ||||||
| Commanders and leaders | |||||||
|
Amr ibn al-A'as Ubadah ibn al-Samit | Theodore | ||||||
| Strength | |||||||
| 12,000 | Unknown | ||||||
| Casualties and losses | |||||||
| Unknown | Unknown | ||||||
The Babylon Fortress, a major military stronghold of the Byzantine Empire in Egypt, was captured by forces of the Rashidun Caliphate after a prolonged siege in 640. It was a major event during the Muslim conquest of Egypt.