الفتح الإسلامي لمصر
During the caliphate of Umar, prominent Ansaris contribute greatly during campaigns against Byzantium. The Ansari chief 'Ubadah ibn al-Samit particularly played many significant roles during Muslim conquest of Egypt and Muslim conquest of Levant under the likes of Abu Ubaydah, Khalid ibn Walid, Amr ibn al-Aas, and Muawiyah