The Pompeian–Parthian invasion of 40 BC occurred after the Pompeians, backed by the

Parthian Empire The Parthian Empire (), also known as the Arsacid Empire (), was a major Iranian political and cultural power centered in ancient Iran from 247 BC to 224 AD. Its latter name comes from its founder, Arsaces I, who led the Parni tribe ...

, had been defeated during the

Liberators' civil war The Liberators' civil war (43–42 BC) was started by the Second Triumvirate to avenge Julius Caesar's assassination. The war was fought by the forces of Mark Antony and Octavian (the Second Triumvirate members, or ''Triumvirs'') against the fo ...

Mark Antony Marcus Antonius (14 January 1 August 30 BC), commonly known in English as Mark Antony, was a Roman people, Roman politician and general who played a critical role in the Crisis of the Roman Republic, transformation of the Roman Republic ...

and

Octavian Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in ...

. King

Orodes II Orodes II (also spelled Urud II; ''Wērōd''), was King of Kings of the Parthian Empire from 57 BC to 37 BC. He was a son of Phraates III, whom he murdered in 57 BC, assisted by his elder brother Mithridates IV. The two brothers ...

sent a Parthian force under Prince

Pacorus I Pacorus I (also spelled Pakoros I; ; died 38 BC) was a Parthian prince, who was the son and heir of Orodes II (). The numismatist David Sellwood deduced that Pacorus ruled in . It is uncertain whether Pacorus ruled alongside his father, or rul ...

and Pompeian General

Quintus Labienus Quintus Labienus Parthicus (died 39 BC) was a Roman general in the Late Republic period. The son of Titus Labienus, he made an alliance with Parthia and invaded the Roman provinces in the eastern Mediterranean which were under the control of Mar ...

in 40 BC to invade the eastern Roman territories while Antony was in Egypt. Roman soldiers in Syria, many of whom had fought against Caesar during the last civil war, joined the force, and the

Levant The Levant ( ) is the subregion that borders the Eastern Mediterranean, Eastern Mediterranean sea to the west, and forms the core of West Asia and the political term, Middle East, ''Middle East''. In its narrowest sense, which is in use toda ...

and much of

Asia Minor Anatolia (), also known as Asia Minor, is a peninsula in West Asia that makes up the majority of the land area of Turkey. It is the westernmost protrusion of Asia and is geographically bounded by the Mediterranean Sea to the south, the Aegean ...

were swiftly overrun by respectively Pacorus I and Labienus. In 39 BC, Antony sent Ventidius, who defeated and executed Labienus in a counterattack and then drove Pacorus I out of the Levant. A second Parthian invasion of Syria by Pacorus I resulted in his death and a Parthian failure. Antony later began a campaign with a massive force against Parthia, but it ended in Roman defeat. Roman–Parthian hostilities formally ended only under the reign of Octavian (

Augustus Gaius Julius Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian (), was the founder of the Roman Empire, who reigned as the first Roman emperor from 27 BC until his death in A ...

Background

The

Parthians Parthia ( ''Parθava''; ''Parθaw''; ''Pahlaw'') is a historical region located in northeastern Greater Iran. It was conquered and subjugated by the empire of the Medes during the 7th century BC, was incorporated into the subsequent Achaemen ...

had defeated and killed

Marcus Licinius Crassus Marcus Licinius Crassus (; 115–53 BC) was a ancient Rome, Roman general and statesman who played a key role in the transformation of the Roman Republic into the Roman Empire. He is often called "the richest man in Rome".Wallechinsky, Da ...

, a member of the

First Triumvirate The First Triumvirate was an informal political alliance among three prominent politicians in the late Roman Republic: Gnaeus Pompeius Magnus, Marcus Licinius Crassus, and Gaius Julius Caesar. The republican constitution had many veto points. ...

along with

Julius Caesar Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC) was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in Caesar's civil wa ...

and

Pompey Gnaeus Pompeius Magnus (; 29 September 106 BC – 28 September 48 BC), known in English as Pompey ( ) or Pompey the Great, was a Roman general and statesman who was prominent in the last decades of the Roman Republic. ...

, at the

Battle of Carrhae The Battle of Carrhae () was fought in 53 BC between the Roman Republic and the Parthian Empire near the ancient town of Carrhae (present-day Harran, Turkey). An invading force of seven Roman legion, legions of Roman heavy infantry under Marcus ...

. They had also maintained relations with Pompey but never supported him militarily during

Caesar's civil war Caesar's civil war (49–45 BC) was a civil war during the late Roman Republic between two factions led by Julius Caesar and Pompey. The main cause of the war was political tensions relating to Caesar's place in the Republic on his expected ret ...

. After Pompey's death, Caesar planned an invasion of Parthia but was assassinated before he could implement it. In 42 BC, Parthian forces fought against the Caesarians under

and

in the

Battle of Philippi The Battle of Philippi was the final battle in the Liberators' civil war between the forces of Mark Antony and Octavian (of the Second Triumvirate) and the leaders of Julius Caesar's assassination, Brutus and Cassius, in 42 BC, at Philippi in ...

during the

. After the defeat of the Liberators, who had assassinated Caesar,

, a general who attempted to resurrect the Pompeian cause and had been sent to Parthia to ask for assistance in the last civil war, joined the Parthians. King

sent him and his son

to invade eastern Roman territories, p. 57 while Antony was in Egypt with

Cleopatra Cleopatra VII Thea Philopator (; The name Cleopatra is pronounced , or sometimes in both British and American English, see and respectively. Her name was pronounced in the Greek dialect of Egypt (see Koine Greek phonology). She was ...

Invasion

Orodes II sent his son Pacorus I as well as Labienus as the commanders of a large Parthian army to invade Roman territory in early 40 BC (or late 41 BC, according to some scholars). According to Vagi, the invasion comprised some 20,000 horsemen. Many Roman forces in Syria defected to Labienus. Antony's commander in

Syria Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to Syria–Turkey border, the north, Iraq to Iraq–Syria border, t ...

, Lucius Decidius Saxa, fled to

Antioch Antioch on the Orontes (; , ) "Antioch on Daphne"; or "Antioch the Great"; ; ; ; ; ; ; . was a Hellenistic Greek city founded by Seleucus I Nicator in 300 BC. One of the most important Greek cities of the Hellenistic period, it served as ...

and then to

Cilicia Cilicia () is a geographical region in southern Anatolia, extending inland from the northeastern coasts of the Mediterranean Sea. Cilicia has a population ranging over six million, concentrated mostly at the Cilician plain (). The region inclu ...

, where he was captured by Labienus and executed. Several Roman '' aquilae'' were then captured by the Parthians. (The ''aquilae'', together with ones captured after the Battle of Carrhae, were later returned after Augustus's negotiations with the Parthians.) Apamea and Antioch surrendered. The two commanders split. Pacorus invaded

Palestine Palestine, officially the State of Palestine, is a country in West Asia. Recognized by International recognition of Palestine, 147 of the UN's 193 member states, it encompasses the Israeli-occupied West Bank, including East Jerusalem, and th ...

and

Phoenicia Phoenicians were an Ancient Semitic-speaking peoples, ancient Semitic group of people who lived in the Phoenician city-states along a coastal strip in the Levant region of the eastern Mediterranean, primarily modern Lebanon and the Syria, Syrian ...

while Labienus launched a "

blitzkrieg ''Blitzkrieg'(Lightning/Flash Warfare)'' is a word used to describe a combined arms surprise attack, using a rapid, overwhelming force concentration that may consist of armored and motorized or mechanized infantry formations, together with ...

" in

that captured much of the region. He was hailed as ''

imperator The title of ''imperator'' ( ) originally meant the rough equivalent of ''commander'' under the Roman Republic. Later, it became a part of the titulature of the Roman Emperors as their praenomen. The Roman emperors generally based their autho ...

''. Pacorus I had gained a reputation for military talent and moderation and swiftly took all the cities along the Levantine coast with the exception of Tyre, which was notoriously difficult to capture. He reached Gaza by May 40 BC and received homage from the

Nabataeans The Nabataeans or Nabateans (; Nabataean Aramaic: , , vocalized as ) were an ancient Arabs, Arab people who inhabited northern Arabian Peninsula, Arabia and the southern Levant. Their settlements—most prominently the assumed capital city o ...

. Meanwhile, his general Barzapharnes led a force inland. The pro-Parthian Jewish leader

Antigonus II Mattathias Antigonus II Mattathias ( ''Antígonos''; , ''Mattīṯyāhū''), also known as Antigonus the Hasmonean (died 37 BCE) was the last Hasmonean dynasty, Hasmonean king of Judea. He was the son of King Aristobulus II of Judea. In 37 BCE Herod the Grea ...

sent a large subsidy to Pacorus I, who supported him in the fight against the pro-Roman Jewish leaders

Hyrcanus II John Hyrcanus II (, ''Yohanan Hurqanos''; died 30 BCE), a member of the Hasmonean dynasty, was for a long time the Jewish High Priest in the 1st century BCE. He was also briefly King of Judea 67–66 BCE and then the ethnarch (ruler) of J ...

and Phasael and successfully installed him as the new king of

Judea Judea or Judaea (; ; , ; ) is a mountainous region of the Levant. Traditionally dominated by the city of Jerusalem, it is now part of Palestine and Israel. The name's usage is historic, having been used in antiquity and still into the pres ...

. Hyrcanus II and Phasael were captured trying to negotiate with the Parthians and were

deported Deportation is the expulsion of a person or group of people by a state from its Sovereignty, sovereign territory. The actual definition changes depending on the place and context, and it also changes over time. A person who has been deported or ...

to Parthia, and Herod, another leader, fled. Antony left Egypt for Greece and sent

Publius Ventidius Publius Ventidius ( 89–38 BC) was a Roman general and one of Julius Caesar's protégés. He won key victories against the Parthians which resulted in the deaths of key leaders – victories which redeemed the losses of Crassus and paved the ...

to Asia Minor. He scored two victories with minimal forces north of the

Taurus Mountains The Taurus Mountains (Turkish language, Turkish: ''Toros Dağları'' or ''Toroslar,'' Greek language, Greek'':'' Ταύρος) are a mountain range, mountain complex in southern Turkey, separating the Mediterranean Sea, Mediterranean coastal reg ...

in 39 BC ( Battle of the Cilician Gates, Battle of Amanus Pass) and captured and executed Labienus. He then drove the Parthians out of Syria. Another Parthian invasion of Syria in 38 BC under Pacorus I resulted in a decisive defeat at the

Battle of Mount Gindarus The Battle of Mount Gindarus or battle of Cyrrhestica in 38 BC was a decisive victory for the Roman general Publius Ventidius Bassus over the Parthian army of Pacorus, son of King Orodes, in the Greater Syria district of Cyrrhestica. Pr ...

in Cyrrhestica, with Pacorus I being killed and the Parthian presence in Syria being brought to an end. Quintus labienus

Coins minted by Labienus survive from the period and were probably minted in Antioch. Labienus had designated himself as ''Parthicus''.

Aftermath

In 38 BC, Mark Antony finally began his campaign against Parthia with a large force, but it resulted in a defeat with heavy Roman losses.

References

{{DEFAULTSORT:Pompeian-Parthian invasion of 40 BC 40 BC 40s BC conflicts 1st century BC in Iran 1st century BC in the Hasmonean Kingdom 1st century BC in the Roman Republic Wars involving the Parthian Empire Wars involving the Roman Republic Roman Anatolia Roman–Parthian Wars Roman Syria Mark Antony Invasions Military history of the Mediterranean