Titus Livius (Livy), The History of Rome, Book 3
Benjamin Oliver Foster, Ph.D., Ed.

4. The next consuls were Aulus Postumius¹ [p. 13]Albus and Spurius Furius Fusus. (Some writers² spell the name Fusius instead of Furius, which I note lest anybody should regard as a substitution of one man for another what is really only a matter of names.)³ [2] There was no doubt but that one consul would make war on the Aequi, and these accordingly appealed to the Ecetranian Volsci for help. It was eagerly granted them —such was the rivalry between these nations in inveterate hatred of Rome —and the most vigorous preparations were made for war. [3] The Hernici perceived, and warned the Romans, that Ecetra had gone over to the Aequi. Suspicion already rested on the colony of Antium, on the ground that a large body of men, escaping from the place at the time of its capture, had taken refuge with the Aequi; [4] and in fact they fought with the greatest spirit all through the Aequian war; afterwards, when the Aequi had been shut up in their towns, this company dispersed, returned to Antium, and won over the colonists, who were even then at heart disloyal to the Romans. [5] The plot was not yet ripe when their proposed defection was reported to the senate, and the consuls were instructed to summon the leaders of the colony to Rome and inquire what was going on. [6] These men made no objection to coming, but on being introduced into the senate by the consuls returned such answers to the questions they were asked that they were under a stronger suspicion when dismissed than they had been on their arrival.

[7] War was from that moment regarded as certain. Spurius Furius, one of the consuls, having received that command, set out against the Aequi. In the country of the Hernici he found the enemy engaged [p. 15]in marauding, and being ignorant of their strength,⁴ because they had never all been seen together, rashly offered battle with an army which was no match for theirs in numbers. [8] At the first attack he was repulsed and withdrew into his camp. Nor did this end his danger, for both that night and the following day his camp was so vigorously hemmed in and assaulted that not even a messenger could be got off to Rome. [9] The Hernici reported the defeat and blockade of the consul and his army, striking such terror into the hearts of the senators that they passed a decree which has always been held to signify the direst necessity: that Postumius, the other consul, should be commissioned to see to it that the republic took no hurt.⁵ [10] It was deemed wisest that the consul himself should remain in Rome, to enroll all who were capable of bearing arms; and that a proconsul, Titus Quinctius, should be sent, with an army of the allies, to relieve the camp. [11] In order to fill out this army the Latins and the Hernici and the colony of Antium were commanded to furnish Quinctius with “emergency-men,” as they used then to term hastily-levied auxiliaries.