The Social or Marsic War commenced in the year 90. The republic was taken by surprise, while her adversaries had already completed their preparations and hastened to assume the offensive. The Italian consuls, the Marsian Pompædius and Papius Mutilus, a Samnite, commanded two different branches of the confederacy—the one acting in the north between the Adriatic and the frontiers of Etruria, whence he sought to penetrate by the valley of the Tiber to Rome; the other directing himself against Campania and Latium on the south. While such was the disposition of their principal armies, various detachments, led by Judacilius, Lamponius, Afranius, Præsenteius, Vettius Scato, Marius Egnatius, Herius Asinius, and others, were charged with the reduction of the strong places occupied by the Romans in the heart of their own country. The whole confederacy was in a moment in arms, and the final embassy which it despatched to Rome announced the defection of three-fourths of Italy. The senate boldly refused to listen to demands extorted by the sword, and required the allies to lay down their arms before presuming to ask a favour. The consuls summoned the citizens to their standards, and while Alba in the country of the Marsians, Æsernia in Samnium, and Pinna in the Vestinian territory, kept the confederates in check, they drafted a hundred thousand men into the legions, and went forth to confront the enemy. Lucius Julius Cæsar undertook the defence of Campania, Publius Rutilius placed himself on the line of the Liris and Tolenus, which cover Rome in the direction of the Marsians and Pelignians. Perperna, with a smaller detachment, maintained the communications between the consular armies, and guarded the approach to Latium through the frontier of the Volscians. The great Marius himself, of whose fidelity the senate might entertain suspicion, was entrusted with a small force on the flanks of Rutilius, while Cæpio and Pompeius, Sulpicius and Crassus were directed to harass the operation of the enemy by making incursions within their territories, and menacing their armies in the rear. A considerable reserve was kept at the same time in Rome itself, and the gates and walls duly repaired and guarded against a sudden attack. Since the flight of Hannibal the city had forgotten the possibility of being again exposed to a siege.
But the Romans had scarcely time to make these dispositions before the Italians rushed impetuously upon them, and broke their lines in various quarters. The consul Cæsar was routed by Vettius Scato in Samnium, and driven from the gates of Æsernia and Venafrum, which he was anxious to support. While the first of these places continued to hold out against a rigorous blockade, the other was surrendered by treachery and its garrison put to the sword. Mutilus defeated Perperna, turned to the left and threw himself into Campania. Disregarding or masking the fortresses on his flanks and rear, he traversed the country with his troops, received the submission of Nola, Pæstum, Stabiæ, Salernum, massacring some of their defenders, and pressing others into his own ranks. But the hearts of the Campanians were still with Rome. Naples, Nuceria, Capua, and Acerræ remained firm, even while their territories were overrun by the Samnite, their slaves liberated and enlisted by thousands among the soldiers of the confederacy.
Tribune in the Dress of a Warrior
The losses and disgraces of the Romans still crowded upon one another. Lamponius defeated Crassus and recovered Grumentum, the strongest place in Lucania; while Canusium and Venusia in the same quarter were taken by Judacilius. Cæsar sustained a second defeat from Egnatius in attempting to relieve Acerræ, Pompeius received a check on the frontiers of Umbria, and lastly the consul Rutilius, drawn into an ambuscade by Vettius Scato, was routed and slain on the Tolenus with a large part of his forces. Marius, who was posted lower down the stream, was advertised of his general’s disaster by the corpses wafted past him by the descending current. He promptly crossed the river, and took possession of the enemy’s camp in their rear, while they were still occupied in gathering the trophies of their victory. But the success of this brilliant manœuvre failed to compensate even one of the many discomfitures the arms of the republic had received.