Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Second Year of the War - Etruria and Umbria Tranquillized
On the strength of these concessions to the wavering communities, the Romans resumed with fresh courage the conflict against the insurgent districts. They had pulled down as much of the existing political institutions as seemed necessary to arrest the extension of the conflagration; the insurrection thenceforth at least spread no farther.
In Etruria and Umbria especially, where it was just beginning, it was subdued with singular rapidity, still more, probably, by means of the Julian law than through the success of the Roman arms. In the former Latin colonies, and in the thickly-peopled region of the Po, there were opened up copious and now trustworthy sources of aid: with these, and with the resources of the burgesses themselves, they could proceed to subdue the now isolated conflagration. The two former commanders-in-chief returned to Rome, Caesar as censor elect, Marius because his conduct of the war was blamed as vacillating and slow, and the man of sixty-six was declared to be in his dotage.
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Reference address : https://www.ellopos.net/elpenor/rome/4-07-sulpician-revolution.asp?pg=42