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
The courage of the Samnites was broken; they sent back the Roman prisoners, and along with them the dead body of the leader of the war party, Brutulus Papius, who had anticipated the Roman executioners, when the Samnite national assembly determined to ask the enemy for peace and to procure for themselves more tolerable terms by the surrender of their bravest general. But when the humble, almost suppliant, request was not listened to by the Roman people (432), the Samnites, under their new general Gavius Pontius, prepared for the utmost and most desperate resistance.
The Roman army, which under the two consuls of the following year (433) Spurius Postumius and Titus Veturius was encamped near Calatia (between Caserta and Maddaloni), received accounts, confirmed by the affirmation of numerous captives, that the Samnites had closely invested Luceria, and that that important town, on which depended the possession of Apulia, was in great danger. They broke up in haste. If they wished to arrive in good time, no other route could be taken than through the midst of the enemy's territory--where afterwards, in continuation of the Appian Way, the Roman road was constructed from Capua by way of Beneventum to Apulia.
This route led, between the present villages of Arpaja and Montesarchio (Caudium), through a watery meadow, which was wholly enclosed by high and steep wooded hills and was only accessible through deep defiles at the entrance and outlet. Here the Samnites had posted themselves in ambush.
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Reference address : https://www.ellopos.net/elpenor/rome/2-06-italians-rome.asp?pg=9