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
Their leader, however, pursued a course different from that of his predecessors. Quintus Fabius was a man advanced in years, of a deliberation and firmness, which to not a few seemed procrastination and obstinacy. Zealous in his reverence for the good old times, for the political omnipotence of the senate, and for the command of the burgomasters, he looked to a methodical prosecution of the war as --next to sacrifices and prayers--the means of saving the state.
A political antagonist of Gaius Flaminius, and summoned to the head of affairs in virtue of the reaction against his foolish war-demagogism, Fabius departed for the camp just as firmly resolved to avoid a pitched battle at any price, as his predecessor had been determined at any price to fight one; he was without doubt convinced that the first elements of strategy would forbid Hannibal to advance so long as the Roman army confronted him intact, and that accordingly it would not be difficult to weaken by petty conflicts and gradually to starve out the enemy's army, dependent as it was on foraging for its supplies.
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Reference address : https://www.ellopos.net/elpenor/rome/3-05-war-hannibal-cannae.asp?pg=22