History of the Peloponnesian War

Now the fleet from Corinth and the rest of the confederates coming from the Crisaean Bay, which ought to have joined Cnemus, in order to prevent the Acarnanians on the coast from succouring their countrymen in the interior, did not do so; but they were compelled, about the same time as the battle was fought at Stratus, to come to an engagement with Phormio and the twenty Athenian vessels that kept guard at Naupactus.

For Phormio kept watching them as they coasted along out of the gulf, wishing to attack them in the open sea.

But the Corinthians and the allies were not sailing to Acarnania with any intention to fight by sea, but were equipped more for land service. When, however, they saw them sailing along opposite to them, as they themselves proceeded along their own coast; and on attempting to cross over from Patrae in Achaia to the mainland opposite, on their way to Acarnania, observed the Athenians sailing against them from Chalcis and the river Evenus; (for they had not escaped their observation when they had endeavoured to bring to secretly during the night;) under these circumstances they were compelled to engage in the mid passage.

They had separate commanders for the contingents of the different states that joined the armament, but those of the Corinthians were Machaon, Isocrates, and Agatharcidas.

And now the Peloponnesians ranged their ships in a circle, as large as they could without leaving any opening, with their prows turned outward and their sterns inward; and placed inside all the small craft that accompanied them, and their five best sailers, to advance out quickly and strengthen any point on which the enemy might make his attack.