History of the Peloponnesian War

Meanwhile, the half of the Corinthians left at Cenchreae to guard against the Athenians sailing on Crommyon, although unable to see the battle for Mount Oneion, found out what was going on by the dust, and hurried up to the rescue; as did also the older Corinthians from the town, upon discovering what had occurred.

The Athenians seeing them all coming against them, and thinking that they were reinforcements from the neighbouring Peloponnesians, withdrew in haste to their ships with their spoils and their own dead, except two that they left behind, not being able to find them,

and going on board crossed over to the islands opposite, and from thence sent a herald, and took up under truce the bodies which they had left behind. Two hundred and twelve Corinthians fell in the battle, and rather less than fifty Athenians.