History of the Peloponnesian War

The Athenians, finding that they no longer advanced to engage them, spoiled the dead, and took up their own, and immediately erected a trophy.

But to that half of the Corinthians which had been posted at Cenchreae for protection, lest the enemy should sail against Crommyon, the battle was not visible, owing to [an intervening ridge of] Mount Oneum; but when they saw dust, and were aware of it, they immediately went to the scene of action; as also did the older Corinthians from the city, when they found what had been done.

The Athenians, seeing them coming all together against them, and thinking that reinforcements were being brought by the neighbouring Peloponnesians, retreated with all speed to their ships, with the spoils and their own dead, except two whom they had left on the field because they could not find them.