2. A Persian officer who was sent by Dareius, at the head of a small force, to guard the
passage of the Euphrates, at Thapsacus, and ravage the district through which Alexander was likely to pass. He prevented the
troops sent forwards by Alexander from
completing the bridges which they had begun to throw across the river, but retired on the
approach of Alexander himself, and rejoined
Darei us. His name occurs several times in the account of the manoeuvres which preceded the
battle of Gaugamela, and in the battle itself he headed the Persian cavalry, with which he
sorely pressed Parmenio, while a detachment by his orders assaulted the Macedonian camp. After
the flight of Dareius he retreated with the remnants of the army to Babylon, but made a
voluntary surrender on the approach of Alexander, who appointed him satrap of Babylon,