History of the Peloponnesian War

It was after this that the alliance between the Athenians and the Acarnanians was first established.

The Ambraciots first conceived their enmity toward the Argives from this enslavement of their own countrymen; and afterwards in the course of the war they made this expedition, which consisted, besides themselves, of Chaonians and some of the other barbarian tribes of the neighbourhood. And when they came to Argos, although they dominated the country, they were unable to take the city by assault; they therefore went home and the several tribes disbanded. Such were the events of the summer.