Page "Muslim conquest of Persia" Paragraph 46

In 638, he feared Khalid ’ s growing power and popularity and dismissed him from military services when he was at the zenith of his military career.

At the time of his dismissal, Khalid was more than able to rebel against Umar, but he never rebelled and made a soft corner in Umar ’ s heart.

In 642 at the eve of the conquest of Persia, Umar, wanting to give a moral boost to his troops, decided to reinstall Khalid as new field commander against Persia.

Already well reputed as an invincible military commander and conqueror of the Eastern provinces of the Roman Empire, Khalid ’ s presence in Persia would strike terror in the Persian commanders, most of whom had already faced Khalid in 633 during his lightning conquest of Mesopotamia.