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
It was wonderful that the Italian communities had not wavered, when Hannibal so palpably showed them the superiority of the Phoenicians and the nullity of Roman aid; but how long could they be expected to bear the burden of a double war, and to allow themselves to be plundered under the very eyes of the Roman troops and of their own contingents? Finally, it could not be alleged that the condition of the Roman army compelled the general to adopt this mode of warfare.
It was composed, as regarded its core, of the capable legions of Ariminum, and, by their side, of militia called out, most of whom were likewise accustomed to service; and, far from being discouraged by the last defeats, it was indignant at the but little honourable task which its general, "Hannibal's lackey," assigned to it, and it demanded with a loud voice to be led against the enemy. In the assemblies of the people the most violent invectives were directed against the obstinate old man.
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Reference address : https://www.ellopos.net/elpenor/rome/3-05-war-hannibal-cannae.asp?pg=27