It was precipitated by the defeat of Pharnabazus in the Aegean Sea and by one army's crossing of the Tigris at Thapsacus. Employing the same plan used at another famous battle, the left wing was led by Parmenion, who was brought into trouble by the Persian right wing commanded by Mazaeus. However, the Greek commander smashed through the center with the Companions cavalry and routed the Persians, though tales of the Persian king fleeing are probably false. FTP, identify this battle of 331 BCE in 
It was precipitated by the defeat of Pharnabazus in the Aegean Sea and by one army's crossing of the Tigris at Thapsacus. Employing the same plan used at another famous battle, the left wing was led by Parmenion, who was brought into trouble by the Persian right wing commanded by Mazaeus. However, the Greek commander smashed through the center with the Companions cavalry and routed the Persians, though tales of the Persian king fleeing are probably false. FTP, identify this battle of 331 BCE in which Alexander the Great permanently crippled the forces of Darius III.
It was precipitated by the defeat of Pharnabazus in the Aegean Sea and by one army's crossing of the Tigris at Thapsacus.
Battle of {Gaugamela} or Battle of {Arbela}