Battle Of Yarmouk Umar Ibn Al-khattab

He appointed Abu Ubaidah ibn al-Jarrah as the supreme commander of the Syrian front. Abu Ubaidah was known for his piety, humility, and unifying presence. However, Umar recognized that the military situation required a brilliant tactician. He instructed Abu Ubaidah to place in direct command of the army's movements.

Following the death of the Prophet Muhammad, the Rashidun Caliphate faced existential threats on two fronts: the Sassanid Empire in Iraq and the Byzantine Empire in Syria. Umar, who became Caliph in 634 CE, recognized that the Byzantine Emperor Heraclius was preparing a massive counter-offensive to reclaim lost territories. battle of yarmouk umar ibn al-khattab