Khalid ibn al-Walid: the Islamic commander who originally fought under the Prophet Muhammad, who went unde
feated in his many military campaigns!

Khalid ibn al-Walid (592-642) is believed to have fought in hundreds of battles, from major wars to small skirmishes, even single duels. On July 30, 634AD, Khalid won one of his better victories using psychological warfare. Khalid led the Rashidun Caliphate to defeat the Byzantine Empire.