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
Hannibal then continued his march unopposed in a north-easterly direction; and by a widely-circuitous route, after traversing and laying under contribution the lands of the Hirpinians, Campanians, Samnites, Paelignians, and Frentanians without resistance, he arrived with rich booty and a full chest once more in the region of Luceria, just as the harvest there was about to begin.
Nowhere in his extensive march had he met with active opposition, but nowhere had he found allies. Clearly perceiving that no course remained for him but to take up winter quarters in the open field, he began the difficult operation of collecting the winter supplies requisite for the army, by means of its own agency, from the fields of the enemy. For this purpose he had selected the broad and mostly flat district of northern Apulia, which furnished grain and grass in abundance, and which could be completely commanded by his excellent cavalry.
An entrenched camp was constructed at Gerunium, twenty-five miles to the north of Luceria. Two-thirds of the army were daily despatched from it to bring in the stores, while Hannibal with the remainder took up a position to protect the camp and the detachments sent out.
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Reference address : https://www.ellopos.net/elpenor/rome/3-05-war-hannibal-cannae.asp?pg=25