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
After the deputies from the towns most closely attached to Macedonia --Dyme, Megalopolis, and Argos--had left the diet, it resolved to join the coalition against Philip. Cycliades and other leaders of the Macedonian party went into exile; the troops of the Achaeans immediately united with the Roman fleet and hastened to invest Corinth by land, which city--the stronghold of Philip against the Achaeans --had been guaranteed to them on the part of Rome in return for their joining the coalition.
Not only, however, did the Macedonian garrison, which was 1300 strong and consisted chiefly of Italian deserters, defend with determination the almost impregnable city, but Philocles also arrived from Chalcis with a division of 1500 men, which not only relieved Corinth but also invaded the territory of the Achaeans and, in concert with the citizens who were favourable to Macedonia, wrested from them Argos. But the recompense of such devotedness was, that the king delivered over the faithful Argives to the reign of terror of Nabis of Sparta.
Philip hoped, after the accession of the Achaeans to the Roman coalition, to gain over Nabis who had hitherto been the ally of the Romans; for his chief reason for joining the Roman alliance had been that he was opposed to the Achaeans and since 550 was even at open war with them. But the affairs of Philip were in too desperate a condition for any one to feel satisfaction in joining his side now.
Nabis indeed accepted Argos from Philip, but he betrayed the traitor and remained in alliance with Flamininus, who, in his perplexity at being now allied with two powers that were at war with each other, had in the meantime arranged an armistice of four months between the Spartans and Achaeans.
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Reference address : https://www.ellopos.net/elpenor/rome/3-08-second-macedonian-war.asp?pg=53