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
March to Capua and Back to Apulia - War in Apulia
Hannibal, well served by his spies in Rome and in the Roman army, immediately learned how matters stood, and, as usual, adjusted the plan of his campaign in accordance with the individual character of the opposing leader. Passing the Roman army, he marched over the Apennines into the heart of Italy towards Beneventum, took the open town of Telesia on the boundary between Samnium and Campania, and thence turned against Capua, which as the most important of all the Italian cities dependent on Rome, and the only one standing in some measure on a footing of equality with it, had for that very reason felt more severely than any other community the oppression of the Roman government.
He had formed connections there, which led him to hope that the Campanians might revolt from the Roman alliance; but in this hope he was disappointed. So, retracing his steps, he took the road to Apulia. During all this march of the Carthaginian army the dictator had followed along the heights, and had condemned his soldiers to the melancholy task of looking on with arms in their hands, while the Numidian cavalry plundered the faithful allies far and wide, and the villages over all the plain rose in flames.
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Reference address : https://www.ellopos.net/elpenor/rome/3-05-war-hannibal-cannae.asp?pg=23