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 prophetic saying of Agelaus of Naupactus, that he was afraid that the prize-fights in which the Greeks now indulged at home might soon be over; his earnest warning to direct their eyes to the west, and not to allow a stronger power to impose on all the parties now contending a peace of equal servitude--such sayings had essentially contributed to bring about the peace between Philip and the Aetolians (537), and it was a significant proof of the tendency of that peace that the Aetolian league immediately nominated Agelaus as its -strategus-.
National patriotism was bestirring itself in Greece as in Carthage: for a moment it seemed possible to kindle a Greek national war against Rome. But the general in such a crusade could only be Philip of Macedonia; and he lacked the enthusiasm and the faith in the nation, without which such a war could not be waged. He knew not how to solve the arduous problem of transforming himself from the oppressor into the champion of Greece.
His very delay in the conclusion of the alliance with Hannibal damped the first and best zeal of the Greek patriots; and when he did enter into the conflict with Rome, his mode of conducting war was still less fitted to awaken sympathy and confidence. His first attempt, which was made in the very year of the battle of Cannae (538), to obtain possession of the city of Apollonia, failed in a way almost ridiculous, for Philip turned back in all haste on receiving the totally groundless report that a Roman fleet was steering for the Adriatic.
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Reference address : https://www.ellopos.net/elpenor/rome/3-06-war-hannibal-cannae-zama.asp?pg=23