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 Athenians were in the habit of receiving support against Macedonia from Alexandria, and were in close league with the Aetolians. But they too were totally powerless, and hardly anything save the halo of Attic poetry and art distinguished these unworthy successors of a glorious past from a number of petty towns of the same stamp.
The power of the Aetolian confederacy manifested a greater vigour. The energy of the northern Greek character was still unbroken there, although it had degenerated into a reckless impatience of discipline and control. It was a public law in Aetolia, that an Aetolian might serve as a mercenary against any state, even against a state in alliance with his own country; and, when the other Greeks urgently besought them to redress this scandal, the Aetolian diet declared that Aetolia might sooner be removed from its place than this principle from their national code.
The Aetolians might have been of great service to the Greek nation, had they not inflicted still greater injury on it by this system of organized robbery, by their thorough hostility to the Achaean confederacy, and by their unhappy antagonism to the great state of Macedonia.
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Reference address : https://www.ellopos.net/elpenor/rome/3-08-second-macedonian-war.asp?pg=12