History of the Peloponnesian War

In the meantime, while the Athenians in Plemmyrium were down at the sea, attending to the engagement, Gylippus made a sudden attack on the forts in the early morning and took the largest first, and afterwards the two smaller, whose garrisons did not wait for him, seeing the largest so easily taken.

At the fall of the first fort, the men from it who succeeded in taking refuge in their boats and merchantmen, found great difficulty in reaching the camp, as the Syracusans were having the best of it in the engagement in the great harbor, and sent a fast sailing galley to pursue them. But when the two others fell, the Syracusans were now being defeated; and the fugitives from these sailed along shore with more ease.

The Syracusan ships fighting off the mouth of the harbor, forced their way through the Athenian vessels and sailing in without any order fell foul of one another, and transferred the victory to the Athenians; who not only routed the squadron in question, but also that by which they were at first being defeated in the harbor,

sinking eleven of the Syracusan vessels and killing most of the men, except the crews of three ships whom they made prisoners. Their own loss was confined to three vessels; and after hauling ashore the Syracusan wrecks and setting up a trophy upon the islet in front of Plemmyrium, they retired to their own camp.