In the Hellenistic age the Acarnanians were constantly assailed by their Aetolian neighbours.
About 244 an Aetolian army overran Laconia, working irreparable harm and carrying off, it is said, 50,000 captives.
Similarly the various cities were divided in their allegiance between the Achaean and the Aetolian leagues, with the result that Arcadia became the battleground of these confederacies, or fell a prey to Sparta and Macedonia.
Similarly the Achaeans could not check the incursions of Aetolian adventurers in 220-218, and when Philip V.
The town of Pale was vainly besieged by Philip of Macedon in 218 B.C., because it had supported the Aetolian cause.