Parmenion (pärmēˈnēən) [key], d. 330 B.C., Macedonian general. He served under Philip II. On Philip's death Parmenion was largely responsible for the adherence of the army in Asia to Alexander the Great. He and the young king were warm friends, and at Issus and Gaugamela in Asia Minor, Parmenion commanded the left wing while Alexander himself led the right. When Alexander was pushing eastward in Persia, he left Parmenion to govern Media (now in Iran). While the king was in Drangiana (330 B.C.), a treason plot was discovered that seemed to implicate Philotas, Parmenion's son. Despite his innocence in this affair, Parmenion was killed at Alexander's command.