Battle of Badr March, the Quraish broke camp and marched into the valley of Badr. It had rained the previous day and they struggled to move their horses and camels up the hill of 'Aqanqal. After they descended from 'Aqanqal, the Meccans set up another camp inside the valley. While they rested, they sent out a scout, Umayr ibn Wahb to reconnoitre the Muslim lines. Umayr reported that Muhammad's army was small, and that there were no other Muslim reinforcements which might join the battle. However, he also predicted extremely heavy Quraishi casualties in the event of an attack (One hadith refers to
Battle of the Eurymedon with the decisive Athenian victory at the Battle of Marathon. Between the two invasions, Darius died, and responsibility for the war passed to his son Xerxes I. Xerxes then led the second invasion personally in 480 BC, taking an enormous (although oft-exaggerated) army and navy to Greece. Those Greeks who chose to resist (the 'Allies') were defeated in the twin battles of Thermopylae and Artemisium on land and at sea respectively. All of Greece except the Peloponnesus thus fell into Persian hands, but then seeking to finally destroy the Allied navy, the Persians suffered a decisive defeat at the Battle