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
In a military point of view the position of the Romans was undoubtedly rendered for the moment highly critical by this unexpected rising in the rear of the army occupied with the siege of the strongholds of Samnium. Once more the fortune of war favoured the Samnites; Sora and Caiatia fell into their hands.
But the Anagnines succumbed with unexpected rapidity before troops despatched from Rome, and these troops also gave seasonable relief to the army stationed in Samnium: all in fact was lost. The Samnites sued for peace, but in vain; they could not yet come to terms. The final decision was reserved for the campaign of 449.
Two Roman consular armies penetrated--the one, under Tiberius Minucius and after his fall under Marcus Fulvius, from Campania through the mountain passes, the other, under Lucius Postumius, from the Adriatic upwards by the Biferno--into Samnium, there to unite in front of Bovianum the capital; a decisive victory was achieved, the Samnite general Statius Gellius was taken prisoner, and Bovianum was carried by storm.
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Reference address : https://www.ellopos.net/elpenor/rome/2-06-italians-rome.asp?pg=25