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
Accession of the Etruscans to the Coalition-- Victory at the Vadimonian Lake
The peoples of northern and central Italy, who seem to have been roused especially by the establishment of the fortress of Luceria, acted with more energy. The Etruscans first drew the sword (443), the armistice of 403 having already expired some years before. The Roman frontier-fortress of Sutrium had to sustain a two years' siege, and in the vehement conflicts which took place under its walls the Romans as a rule were worsted, till the consul of the year 444 Quintus Fabius Rullianus, a leader who had gained experience in the Samnite wars, not only restored the ascendency of the Roman arms in Roman Etruria, but boldly penetrated into the land of the Etruscans proper, which had hitherto from diversity of language and scanty means of communication remained almost unknown to the Romans.
His march through the Ciminian Forest which no Roman army had yet traversed, and his pillaging of a rich region that had long been spared the horrors of war, raised all Etruria in arms. The Roman government, which had seriously disapproved the rash expedition and had when too late forbidden the daring leader from crossing the frontier, collected in the greatest haste new legions, in order to meet the expected onslaught of the whole Etruscan power.
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Reference address : https://www.ellopos.net/elpenor/rome/2-06-italians-rome.asp?pg=21