How a Roman general's mutinous army paved the way for Pompey the Great's rise
The Third Mithridatic War was a decade-long struggle that reshaped the ancient East. While Rome eventually dismantled the Pontic Kingdom and turned Armenia into a client state, the conflict was defined by internal Roman power plays, logistical nightmares, and a mutiny that forced a change in command.
The Third Mithridatic War (73–63 BC) began when King Nicomedes IV of Bithynia bequeathed his kingdom to Rome, prompting Mithridates VI of Pontus to invade. Rome dispatched consuls Lucius Licinius Lucullus and Marcus Aurelius Cotta to counter the threat. While Cotta suffered early naval losses at Chalcedon, Lucullus eventually trapped Mithridates at Cyzicus, forcing a retreat that decimated the Pontic army. Lucullus followed this by systematically dismantling Pontic defenses, including the siege of Amisus and the capture of the treasury at Nisibis.
Despite his tactical successes, Lucullus faced mounting challenges. His soldiers, exhausted by years of campaigning and frustrated by perceived lack of profit, mutinied in 68–67 BC, refusing to march further against Mithridates. This internal collapse was exacerbated by the interference of Publius Clodius Pulcher, who acted on behalf of Pompey. With Lucullus's authority undermined and his army refusing to fight, Mithridates regained control of Pontus following a victory at the Battle of Zela in 67 BC.
The political landscape in Rome shifted in 66 BC with the passage of the Lex Manilia, which granted Pompey supreme command in the East. Pompey secured Parthian neutrality and cornered Mithridates at the river Lycus, forcing the king to flee to the Cimmerian Bosporus. Pompey then turned his attention to Tigranes II of Armenia, who surrendered and accepted client status. By 65 BC, Pompey had solidified Roman dominance across the region, effectively ending the Pontic threat and the Seleucid Empire.
Source: Third Mithridatic War
