AI Rewrites Yarmouk: What If Byzantium Had Held?

By: Wright, Devon

What if Byzantium had held?

In August 636 AD, a Byzantine general held the strongest position on the battlefield. Heavy infantry, unbreakable in defense. Flanks anchored on a gorge two hundred feet deep. Five days of fighting and the enemy hadn't cracked his line. All he had to do was hold.

He attacked instead. The advance opened his flanks. Khalid ibn al-Walid - the commander who had never lost a battle - committed 8,000 reserve cavalry he'd been holding for exactly this moment. They seized the bridge. They trapped the army. The destruction took two hours. Syria, Palestine, Egypt, and eventually all of North Africa fell in the aftermath. The Middle East became Muslim - permanently.

AI Rewrites Yarmouk tells the full story of the battle that ended Roman rule in the East - then simulates what would have happened if Vahan had held his defensive position. The result: a twenty-three-point swing in Byzantine chances. And the key variable isn't leadership or terrain - it's coalition cohesion. Vahan's fractious alliance of Greeks, Armenians, and Arab Christians was fraying. His attack was an attempt to save it. It was the wrong solution to a real problem.

From the exhausted empire that had just bled itself white against Persia, to the storm from Arabia led by an undefeated commander, to the six days of savage fighting on a volcanic plateau, this is narrative military history at its most gripping - and a simulation that asks: what if Jerusalem had stayed Christian?

Inside you'll find:

The full six-day battle: the exhausted empire, the storm from Arabia, and the afternoon that broke the Roman EastKhalid ibn al-Walid - the commander who never lost, and the five-day trap he set with 8,000 horsemenA complete AI simulation: the twenty-three-point swing, coalition cohesion as the key variable, and a Christian Middle East that never wasThe coalition trap - why the leader who commands an alliance cannot afford to confuse action with strength

The fourth book in the AI Rewrites History series. Each book stands alone, but together they ask the same question: when everything depends on one decision, what separates the leaders who get it right from the ones who don't?

• Format: Paperback
• Language: English
• ISBN: B0HJFHF1F1
• ISBN13: 9798173270733
• Release Date: September 2026
• Publisher: Independently Published
• Length: 58 Pages
• Weight: 0.20 lbs.
• Dimensions: 0.1" x 6.0" x 9.0"