History of the Peloponnesian War

After they had arrived at the isthmus, and saw the enemy preparing for battle, they formed against him, and soon afterwards engaged.

The wing of Aristeus, with the Corinthians and other picked troops round him, routed the wing opposed to it, and followed for a considerable distance in pursuit. But the rest of the army of the Potidaeans and of the Peloponnesians was defeated by the Athenians, and took refuge within the fortifications.