History of the Peloponnesian War

The Corinthians, as they sailed homeward, took by stratagem Anactorium, which is at the mouth of the Ambracian Gulf, a place held by the Corcyraeans and themselves in common, and establishing there some Corinthian colonists returned home. Of their Corcyraean prisoners they sold eight hundred who were slaves, but two hundred and fifty they kept in custody and treated them with much consideration, their motive being that when they returned to Corcyra they might win it over to their side;1 and it so happened that most of these were among the most influential men of the city.

In this way, then, Corcyra had the advantage in the war with the Corinthians, and the ships of the Athenians withdrew from it. And this was the first ground which the Corinthians had for the war against the Athenians, because they had fought with the Corcyraeans against them in time of truce.