 After Philip's death in 336 BC, many of the Thracian tribes revolted against Philip's son Alexander the Great, who waged a campaign against and defeated the Getae and King Syrmus of the Triballi.All other Thracians sent troops to join Alexander's army.Seuthes revolted against Macedon in about 325 BC, after Alexander's governor Zopyrion was killed in battle against the Getae.