The two great Arab military victories of 636, the Battle of Yarmouk against the Byzantines and the Battle of al-Qadisiyah against the Sasanian Persians, were decisive in both in military and in geopolitical terms. Taken individually, they changed the course of both of the defeated empires—the Byzantines would never again hold significant territory south of Anatolia, and … Continue reading Today in Middle Eastern history: the Battle of al-Qadisiyah (636)