The defeat of Varinius aroused the Roman government to see that their enemy was not to be despised, and, revolted slave though he was, they were compelled to pay him the respect of making prodigious efforts to effect his destruction. The Consuls Gellius and Lentulus were charged with the conduct of the war. The former overthrew the Gauls. The latter followed Spartacus, and came up with him in Etruria. Here a contest of pure generalship took place. Lentulus was determined not to fight until Gellius--whose victory he knew of-- should have come up; and Spartacus was equally determined that fight he should before the junction could be effected. He succeeded in blocking up the road by which Gellius was advancing, unknown to Lentulus, and then offered the latter battle. Supposing that his colleague would join him in the course of the action, the Roman accepted the challenge and was beaten. The victors then marched to meet Gellius, who was served after the same manner as Lentulus. Spartacus was the only general who ever defeated two great Roman armies, each headed by a Consul, on the same day, and in different battles. Hannibal's Austerlitz, Cannae, approaches nearest to this exploit of the Thracian; but on that field the two consular armies were united under the command of Varro.
These great successes were soon followed by the defeat of two lesser Roman armies, combined under the lead of the Praetor Manlius and the Proconsul Cassius. This last victory not only left the whole open country at the command of Spartacus, but also the road to Rome, upon which city he now resolved to march. It would have been wiser, had he persevered in his original plan, the execution of which his victories must have made it easy to carry out. But perhaps success had its usual effect, even on his mind, and blinded him to the impossibility of permanent triumph in Italy. He winnowed his army, dismissing all his soldiers except such as were distinguished by their bravery, their strength, and their intelligence. In order that his march might be swift, he caused all the superfluous baggage to be destroyed. Every beast of burden that could be dispensed with was slain. His prisoners were disposed of after the same fashion. In a modern general such an act would be utterly without excuse. But it was strictly in accordance with the laws of ancient warfare, and Spartacus probably felt far more regret at sacrificing his beasts of burden than he experienced in consenting to, if he did not order, the butchery of some thousands of men whom he must have looked upon as so many brutes.