Khalid Al-Masslul: A Companion to Muhammad

Khalid was a companion to Muhammad and served under the later Rashidun caliphs. In history, I'd easily put him up there with people like Hannibal or Caesar, Jackson, Napoleon, even Rommel. This was a man that was bred for war. He had this predenatural instinct for it. Khalid organized an attack on lower Mesopotamia.