On 22 August 634, Caliph Abu Bakr died and Umar became caliph he relieved Khalid ibn al-Walid from the command of the Islamic army and appointed Abu Ubaidah as the new commander.
August 634, Caliph Abu Bakr died. This was on 22. August 634, Umar became caliph he relieved Khalid ibn al-Walid from the command of the Islamic army and appointed Abu Ubaidah as the new commander. This was on 22.