Khalid bin Walid

Khalid bin Walid took command of the Muslim army after three previous commanders were killed. He executed a tactical withdrawal, saving the Muslim force from annihilation by a much larger Byzantine and Arab Christian army. This action earned him the title 'Sword of Allah' from Muhammad.

Khalid bin Walid led the Muslim army against the forces of Musaylima, a false prophet, during the Ridda Wars. The battle was fierce and resulted in a decisive Muslim victory, crushing the rebellion in central Arabia and solidifying the nascent caliphate's control.

Khalid bin Walid defeated a larger Sassanid Persian army in Mesopotamia using a double envelopment tactic. This victory opened the way for the Muslim conquest of Iraq and demonstrated Khalid's strategic ingenuity against a major empire.

Khalid bin Walid, as supreme commander, led the Muslim army to a decisive victory over a large Byzantine force in Syria. The battle lasted six days and resulted in the permanent Muslim conquest of Syria and Palestine, ending Byzantine rule in the Levant.

Caliph Umar dismissed Khalid bin Walid from his command of the Muslim armies in Syria. Umar cited concerns over Khalid's growing fame and potential for fitna (civil strife), though he did not punish him. Khalid retired to Homs and died a few years later.