Roman Battles in the 1st Century BC

• 89 BC -
• Battle of Fucine Lake - Roman forces under Lucius Porcius Cato are defeated by the Italian rebels in the Social War
• Battle of Asculum - Roman army of C. Pompeius Strabo decisively defeats the rebels in the Social War.
• 86 BC - Battle of Chaeronea - Roman forces of Lucius Cornelius Sulla defeat the Pontic forces of Archelaus in the First Mithridatic Wari
• 85 BC - Battle of Orchomenus - Sulla again defeats Archelaus in the decisive battle of the First Mithridatic War.
• 83 BC - Battle of Mount Tifata - Sulla defeats the popular forces of Caius Norbanus in the First Roman Civil War.
• 82 BC - Battle of Colline Gate - Sulla defeats Samnites allied to the popular party in Rome in the decisive battle of the Civil War.
• 80 BC - Battle of the Baetis River - Rebel forces under Quintus Sertorius defeat the legal Roman forces of Lucius Fulfidias in Hispania.
• 74 BC - Battle of Cyzicus - Roman forces under Lucius Lucullus defeat the forces of Mithridates VI of Pontus
• 72 BC - Battle of Cabira - Lucullus again defeats Mithridates, overrunning Pontus
• 72 BC - Battle of Picenum - Slave Revolt led by Spartacus defeat a Roman army led by Gellius Publicola and Gnaeus Cornelius Lentulus Clodianus
• 72 BC - Battle of Mutina I - Slave Revolt led by Spartacus defeat another army of Romans.
• 71 BC - Battle of Campania - Slave Revolt led by Spartacus defeat a Roman army.
• 71 BC - Battle of Campania II - a Roman army under Marcus Crassus defeat Spartacus's army of slaves.
• 71 BC - Battle of Silarus River - Marcus Crassus defeats the army of Spartacus.
• 69 BC - Battle of Tigranocerta - Lucullus defeats the army of Tigranes II of Armenia, who was harbouring his father-in-law Mithridates VI of Pontus
• 68 BC - Battle of Artaxata - Lucullus again defeats Tigranes.
• 66 BC - Battle of the Lycus - Pompey the Great decisively defeats Mithridates VI, effectively ending the Third Mithridatic War
• 62 BC, January - Battle of Pistoria - The forces of the conspirator Catiline are defeated by the loyal Roman armies under Gaius Antonius.