against Parthia due to his departure to Italy, where he amassed his forces to confront his rival Octavian and eventually conducted negotiations with him at Brundisium. After Syria was occupied by Pacorus's army, Labienus split from the main Parthian force to invade Anatolia while Pacorus and his commander Barzapharnes invaded the Roman Levant. They subdued all settlements along the Mediterranean coast as far south as Ptolemais (modern Acre, Israel), with the exception of Tyre. In Judea, the pro-Roman Jewish forces of high priest Hyrcanus II, Phasael, and Herod were defeated by the Parthians and their Jewish ally Antigonus II Mattathias (r. 40–37 BC); the latter was made king of Judea while Herod fled to his fort at Masada. Despite these successes, the Parthians were soon driven out of the Levant by a Roman counteroffensive. Publius Ventidius Bassus, an officer under Mark Antony, defeated and then executed Labienus at the Battle of the Cilician Gates (in modern Mersin Province, Turkey) in 39 BC. Shortly afterward, a Parthian force in Syria led by general Pharnapates was defeated by Ventidius at the Battle of Amanus Pass. As a result, Pacorus temporarily withdrew from Syria. When he returned in the spring of 38 BC, he faced Ventidius at the Battle of Mount Gindarus, northeast of Antioch. Pacorus was killed during the battle, and his forces retreated across the Euphrates. His death spurred a succession crisis in which Orodes II, deeply afflicted by the death of his favourite son, relinquished the throne to his other son Phraates IV () as his new heir. The numismatist David Sellwood deduced that Pacorus ruled in . It is uncertain whether Pacorus ruled alongside his father, or ruled independently. In literature The medieval Muslim writer al-Tha'alibi (died 1038) reported that Pacorus (whom he referred to as Afqūr Shāh) recovered the Derafsh-e Kaviani, and made campaigns into Roman territory to avenge Alexander the Great's conquest of Persia. References Sources Further reading People of the Roman–Parthian Wars Generals of the Parthian Empire 38 BC deaths 1st-century BC Iranian people