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 consul now advanced into the Tarentine territory; but instead of immediately commencing hostilities, he offered once more the same terms of peace; and, when this proved in vain, he began to lay waste the fields and country houses, and he defeated the civic militia. The principal persons captured, however, were released without ransom; and the hope was not abandoned that the pressure of war would give to the aristocratic party ascendency in the city and so bring about peace.
The reason of this reserve was, that the Romans were unwilling to drive the city into the arms of the Epirot king. His designs on Italy were no longer a secret. A Tarentine embassy had already gone to Pyrrhus and returned without having accomplished its object. The king had demanded more than it had powers to grant. It was necessary that they should come to a decision. That the civic militia knew only how to run away from the Romans, had been made sufficiently clear.
There remained only the choice between a peace with Rome, which the Romans still were ready to agree to on equitable terms, and a treaty with Pyrrhus on any condition that the king might think proper; or, in other words, the choice between submission to the supremacy of Rome, and subjection to the --tyrannis-- of a Greek soldier.
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Reference address : https://www.ellopos.net/elpenor/rome/2-07-pyrrhus-rome-italy.asp?pg=19