The Battle of Tor and Poitier

Charles Martel was the effective leader of the Franks under the nominal kingship of the Maravindian dynasty. After a Muhammad's death in 632, his successors and the caliphs of the Umayyad dynasty had taken Islam and the Arabic tribes all the way across the classical world. This has got to be one of the most extraordinary successes in history that had taken a small group of primitive tribes to a massive empire driven by economic hardship and religious fervor. I'll do my best to describe, but there are maps at thehistriffingland.com.