History of the Peloponnesian War

This was a fort of the Athenians upon the Boeotian border, at that moment besieged by the Corinthians, irritated by the loss of a party returning from Decelea, who had been cut off by the garrison. The Corinthians had volunteered for this service, and had called upon the Boeotians to assist them.

After communicating with them, Aristarchus deceived the garrison in Oenoe by telling them that their countrymen in the city had compounded with the Lacedaemonians, and that one of the terms of the capitulation was that they must surrender the place to the Boeotians. The garrison believed him as he was general, and besides knew nothing of what had occurred owing to the siege, and so evacuated the fort under truce.

In this way the Boeotians gained possession of Oenoe, and the oligarchy and the troubles at Athens ended.