History of the Peloponnesian War

When, however, the Athenians had sailed back to Naupactus, the Corinthians immediately erected a trophy, as conquerors; because they had disabled a greater number of their enemy's ships, and considered that they were not beaten, for the very same reason that the other party considered them not to have conquered: for the Corinthians regarded themselves as having the advantage if they were not decidedly beaten, and the Athenians considered them to be worsted, because they were not decidedly conquerors.

But when the Peloponnesians had sailed off, and their troops had dispersed, the Athenians erected a trophy on their side also, as having gained the victory, in Achaea, at about twenty stades distance from Erineus, where the Corinthians were stationed. And so ended the sea-fight.