 Military conquests of Umar's era

Umar was the second Rashidun Caliph and reigned during 634-644.Umar's caliphate is notable for its vast conquests, aided by brilliant field commanders, he was able to incorporate present day Iraq, Iran, Azerbaijan, Armenia, Georgia, Syria, Jordan, Palestine, Lebanon, Egypt, and part of Afghanistan, Turkmenistan and south western Pakistan into the empire of the Muslims.