page_title: Mark Antony
section_title: Roman–Parthian relations
hierarchical_section_title: Mark Antony / Master of the Roman East / Antony's Parthian War / Roman–Parthian relations
context_page_description: Marcus Antonius, commonly known in English as Mark Antony or Anthony, was a Roman politician and general who played a critical role in the transformation of the Roman Republic from a constitutional republic into the autocratic Roman Empire.
  Antony was a supporter of Julius Caesar, and served as one of his generals during the conquest of Gaul and the Civil War. Antony was appointed administrator of Italy while Caesar eliminated political opponents in Greece, North Africa, and Spain. After Caesar's death in 44 BC, Antony joined forces with Marcus Aemilius Lepidus, another of Caesar's generals, and Octavian, Caesar's great-nephew and adopted son, forming a three-man dictatorship known to historians as the Second Triumvirate. The Triumvirs defeated Caesar's murderers, the Liberatores, at the Battle of Philippi in 42 BC, and divided the government of the Republic between themselves. Antony was assigned Rome's eastern provinces, including the client kingdom of Egypt, then ruled by Cleopatra VII Philopator, and was given the command in Rome's war against Parthia.
  Relations among the triumvirs were strained as the various members sought greater political power.
context_section_description: The rise of the Parthian Empire in the 3rd century BC and Rome's expansion into the Eastern Mediterranean during the 2nd century BC brought the two powers into direct contact, causing centuries of tumultuous and strained relations. Though periods of peace developed cultural and commercial exchanges, war was a constant threat. Influence over the buffer state of the Kingdom of Armenia, located to the north-east of Roman Syria, was often a central issue in the Roman-Parthian conflict. In 95 BC, Parthian Shah Mithridates II, installed Tigranes the Great as Parthian's client-king over Armenia. Tigranes would wage a series of three wars against Rome before being ultimately defeated by Pompey in 66 BC. Thereafter, with his son Artavasdes II in Rome as a hostage, Tigranes would rule Armenia as an ally of Rome until his death in 55 BC. Rome then installed Artavasdes II as king and continued its influence over Armenia.
  In 53 BC, Rome's governor of Syria, Marcus Licinius Crassus, led an expedition across the Euphrates River into Parthian territory to confront the Parthian Shah Orodes II. Artavasdes II offered Crassus the aid of nearly forty thousand troops to assist his Parthian expedition on the condition that Crassus invade through Armenia as the safer route. Crassus refused, choosing instead the more direct route by crossing the Euphrates directly into desert Parthian territory. Crassus' actions proved disastrous as his army was defeated at the Battle of Carrhae by a numerically inferior Parthian force. Crassus' defeat forced Armenia to shift its loyalty to Parthia, with Artavasdes II's sister marrying Orodes' son and heir Pacorus.
  In early 44 BC, Julius Caesar announced his intentions to invade Parthia and restore Roman power in the East. His reasons were to punish the Parthians for assisting Pompey in the recent civil war, to avenge Crassus' defeat at Carrhae, and especially to match the glory of Alexander the Great for himself. Before Caesar could launch his campaign, however, he was assassinated. As part of the compromise between Antony and the Republicans to restore order following Caesar's murder, Publius Cornelius Dolabella was assigned the governorship of Syria and command over Caesar's planned Parthian campaign. The compromise did not hold, however, and the Republicans were forced to flee to the East. The Republicans directed Quintus Labienus to attract the Parthians to their side in the resulting war against Antony and Octavian. After the Republicans were defeated at the Battle of Philippi, Labienus joined the Parthians. Despite Rome's internal turmoil during the time, the Parthians did not immediately benefit from the power vacuum in the East due to Orodes II's reluctance despite Labienus' urgings to the contrary.
  In the summer of 41 BC, Antony, to reassert Roman power in the East, conquered Palmyra on the Roman-Parthian border. Antony then spent the winter of 41 BC in Alexandria with Cleopatra, leaving only two legions to defend the Syrian border against Parthian incursions. The legions, however, were composed of former Republican troops and Labienus convinced Orodes II to invade.
caption: A map of the Parthian Empire. Parthia shared its western border along the Euphrates River with Rome.
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