In August 636, near the Yarmuk river in modern-day Syria/Jordan, a battle was fought between the new Islamic Caliphate and the Roman Empire that would change the course of history. 

For a free ebook, maps and blogs check out my website nickholmesauthor.com
Find my latest book, Justinian's Empire, on Amazon.com and Amazon.co.uk. For German listeners, find the German translation of the first book in my series on the 'Fall of the Roman Empire', Die römische Revolution, on Amazon.de. Finally check out my new YouTube videos on the fall of the Roman Empire.