Third Mithridatic War

The Third Mithridatic War (73–63 BC) was the last and longest of three Mithridatic Wars fought between Mithridates VI of Pontus and his allies and the Roman Republic. The war ended in defeat for Mithridates, ending the Pontic Kingdom and resulted in the Kingdom of Armenia becoming an allied client state of Rome.

Prior to War
The period between the Second and Third wars of Rome and the Pontic Kingdom (81–75 BC) is discussed under the Kingdom of Pontus. There it can be seen how the long piracy wars were a development out of the First Mithridatic War and especially of the alliance between Mithridates VI and Sertorius, which in joining those two threats into a unity much larger than its parts had the serious potential of overturning Roman power. The immediate cause of the Third War was the bequest to Rome by King Nicomedes IV of Bithynia of his kingdom upon his death (74 BC).

Forces and initial deployments, 74–73 BC
Having launched an attack at the same time as a revolt by Sertorius swept through the Spanish provinces, Mithridates was initially virtually unopposed. The Senate responded by sending the consuls Lucius Licinius Lucullus and Marcus Aurelius Cotta to deal with the Pontic threat. The only other possible general for such an important command, Pompey, was in Gaul, marching to Hispania to help crush the revolt led by Sertorius. Lucullus was sent to govern Cilicia and Cotta to Bithynia.

The original plan was that Cotta should tie down Mithridates' fleet, while Lucullus attacked by land. Cotta was therefore ordered to station his fleet at Chalcedon, while Lucullus marched through Phrygia with the intention of invading Pontus. Lucullus had not advanced far when news came through that Mithridates had made a rapid march westward, attacked Cotta, and forced him to flee behind the walls of Chalcedon. Sixty-four Roman ships had been captured or burnt, and Cotta had lost three thousand men. There Cotta was forced to remain until Lucullus could come to his rescue.

Having made his way to Nicomedia, Cotta watched in frustration as Mithridates, after destroying his fleet, escaped the city and sailed down the Bosporus to the town of Heraclea Pontica. Joined by Lucullus at Nicomedia in 73 BC, Cotta was assigned the task of securing Lucullus' rear by taking the town of Heraclea, which Mithridates had reinforced with 4,000 troops. After reducing the Pontic coast, Cotta began besieging Heraclea, which took him two years to complete, sacking the city in 71 BC. During this time he was forced to dismiss one of his quaestors, P. Oppius, charging him with bribery and conspiracy.

While Lucullus stayed in the East, Cotta returned to Rome in 70 BC, where he at first was widely acclaimed for his victory at Heraclea. However, around 67 BC he was accused of appropriation of war booty by Gaius Papirius Carbo. He was convicted of the offence and expelled from the Senate.

Lucullus in Command
Upon his arrival, Lucullus met up with Roman forces which had been campaigning in Asia Minor. In 69 BC Lucullus led a campaign into Armenia against Tigranes II, Mithridates' son-in-law and ally, to whom Mithridates had fled after Cabeira. He began a siege of the new Armenian imperial capital of Tigranocerta in the Arzenene district. Tigranes returned from mopping up a Seleucid rebellion in Syria with his main host, and sought battle with the Romans. Lucullus' army annihilated the Armenian host, despite odds of about more than two to one against him. This was the famous battle of Tigranocerta. It was fought on the same (pre-Julian) calendar date as the Roman disaster at Arausio 36 years earlier, the day before the Nones of October according to the reckoning of the time (or October 6), which is Julian October 16, 69 BC. Tigranes then retired to the northern regions of his kingdom to gather another army and defend his hereditary capital of Artaxata. Meanwhile, Lucullus moved off south-eastwards to the kingdom of the Kurds (Korduene) on the frontiers of the Armenian and Parthian empires. During the winter of 69-68 BC both sides opened negotiations with the Parthian king, Arsakes XVI, who was presently defending himself against a major onslaught from his rival Frahates III coming from Bactria and the far east.

In the summer of 68 BC Lucullus marched against Tigranes and crossed the Anti-Taurus range heading for the old Armenian capital Artaxata. Once again Tigranes was provoked to attack and in a major battle at the Aratsani River Lucullus was heavily defeated by the Armenian army. Soon he left this campaign and when winter came on early in the Armenian tablelands, his troops mutinied, refusing to go further, and he was forced to withdraw southwards back into Arzenene. From there he proceeded back down through Korduene into old Assyria and in the late autumn and early winter besieged and took Nisibis, the main Armenian fortress city in Northern Mesopotamia.

During the winter of 68-67 BC at Nisibis, his authority over his army was more seriously undermined by the efforts of his young brother-in-law Publius Clodius Pulcher, apparently acting in the interests and pay of Pompey the Great, who was eager to succeed Lucullus in the eastern command. After mutiny spread in the legions with the troops refusing to obey Lucullus' commands, the senate sent Pompey to succeed Lucullus. This lull allowed Mithridates and Tigranes to retake part of their respective kingdoms.

Pompey in Command
On the approach of Pompey, Mithridates retreated towards Armenia but was defeated. As Tigranes the Great now refused to receive him into his dominions, Mithridates resolved to plunge into the heart of Colchis, and thence make his way to his own dominions in the Cimmerian Bosporus. Pompey now marched against Tigranes, whose kingdom and authority were now severely weakened. Tigranes then sued for peace and met with Pompey to plead a cessation of hostilities. The Armenian Kingdom now became an allied client state of Rome.

In 65 BC, Pompey had set out in pursuit of Mithridates meeting opposition from the tribal Caucasians and after advancing as far as Phasis in Colchis, where he met up with Servilius, the admiral of his Euxine fleet. Pompey now retook his steps, and spent the winter at Pontus, which he declared would become a Roman province.

Complete Roman Victory
After his defeat by Pompey in 65 BC, Mithridates VI fled with a small army from Colchis (modern Georgia) over the Caucausus Mountains to Crimea and attempted to raise yet another army to take on the Romans but failed to do so. In 63 BC, he withdrew to the citadel in Panticapaeum. His eldest son, Machares, now king of Cimmerian Bosporus, whose kingdom had been reorganized by the Romans, was unwilling to aid his father. Mithridates had Machares murdered and took the throne of the Bosporan Kingdom, intent on retaking Pontus from the Romans. His younger son, Pharnaces II, backed by a disgruntled and war weary populace, led a rebellion against his father. This betrayal, after the decisive defeat in battle, hurt Mithridates more than any other and seeing his loss of authority he attempted suicide by poison. The attempt failed as he had gained immunity to various poisons from taking tiny doses of all available poisons throughout his life to guard against assassination. According to Appian's Roman History, he then ordered his Gallic bodyguard and friend, Bituitus, to kill him by the sword: Mithridates' body was buried in Sinope, the capital of Pontus, on the orders of Pompey himself.

Ancient sources

 * FHG = Karl Müller (ed.) Fragmenta Historicorum Graecorum
 * FGrH = Felix Jacoby (ed. & critical commentary), Die Fragmente der griechischen Historiker (commenced 1923)

- ed. René Henry Photius Bibliotheque Tome IV: Codices 223-229 (Association Guillaume Budé, Paris, 1965), pp. 48–99: Greek text with French translation
 * Memnon of Herakleia Pontike, 9th century epitome in the ΒΙΒΛΙΟΘΗΚΗ of Photius of Byzantium (codex 224)

- ed. K. Müller FHG III, 525: Greek text with Latin translation

- ed. F. Jacoby FGrH no.434: Greek text, detailed commentary in German

- ed. K. Müller FHG III, 602ff.
 * Phlegon of Tralles fragmenta

- ed. F. Jacoby FGrH no.257

- English translations and commentary by William Hansen, Phlegon of Tralles' Book of Marvels (University of Exeter Press, 1996)

Modern works
Abbreviations

RE = Real-Encyclopädie der classischen Altertumswissenschaft, eds. Pauly, Wissowa, Kroll

Major studies. I. Introduction. Klio, 9 (1909), 400-412
 * Eckhardt, Kurt. "Die armenischen Feldzüge des Lukullus",

II. Das Kriegsjahr 69. Klio, 10 (1910), 72-115

III. Das Kriegsjahr 68. Klio, 10 (1910), 192-231
 * Holmes, T. Rice: The Roman Republic and the Founder of the Empire, vol.I (1923), 398-436
 * Gelzer, Matthias: "L. Licinius Lucullus cos.74", RE vol.XIII (1926), s. v. Licinius (104), colls.376-414.
 * Magie, David: Roman Rule in Asia Minor, to the End of the Third Century after Christ 2 vols. (Princeton University Press, 1950)
 * Van Ooteghem, J: Lucius Licinius Lucullus, (Brussels, 1959)
 * Keaveney, Arthur: Lucullus. A Life. (London/New York: Routledge, 1992). ISBN 0-415-03219-9.

Shorter articles.
 * Anderson, J G C: "Pompey's Campaign against Mithradates", JRS 12 (1922), 99ff.
 * Downey, Glanville: "Q. Marcius Rex at Antioch", Classical Philology 32 (1937), 144-151
 * Bennett, William H: "The Death of Sertorius and the Coin", Historia, 10 (1961), 459-72
 * McGing, B C: "The Date of the outbreak of the Third Mithridatic War", Phoenix, 38 (1984), 12-18
 * Williams, Richard S: "The Appointment of Glabrio (COS.67) to the Eastern Command", Phoenix 38 (1984), 221-234
 * Tatum, W J: "Lucullus and Clodius at Nisibis (Plutarch, Lucullus 33-34)", Athenaeum, 79 (1991)