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Prince$s
This is a great suggestion.Power of the Sword of Islam
No resistance in conquered cities.
(Here, the Sword more refers to how Walid successfully conquered and held territory so easily)
Khalid is the Sword of Allah. One of the greatest military commanders of all time and especially admirable for his minimization of bloodshed.
My UP suggestion was made with Muhammad and the Rightly Guided Caliphs in mind, but Khalid is just as worthy of the honor.