History of the Peloponnesian War

Gylippus, when the navy was ready, drew out his whole power of land soldiers in the beginning of night, meaning to go himself and assault the fortifications in Plemmyrium; withal the galleys of the Syracusians, by appointment, thirty-five of them came up towards it out of the great haven; and forty-five more came about out of the little haven, where also was their arsenal, with purpose to join with those within and to go together to Plemmyrium that the Athenians might be troubled on both sides.

But the Athenians having quickly manned sixty galleys to oppose them, with twenty-five of them they fought with the thirty-five of the Syracusians in the great haven, and with the rest went to meet those that came about from the little haven. And these fought presently before the mouth of the great haven and held each other to it for a long time, one side endeavouring to force, the other to defend the entrance.

In the meantime, Gylippus (the Athenians in Plemmyrium being now come down to the water side, and having their minds busied upon the fight of the galleys) betimes in the morning and on a sudden assaulted the fortifications before they could come back again to defend them, and possessed first the greatest and afterwards the two lesser; for they that watched in these, when they saw the greatest so easily taken, durst stay no longer.

They that fled upon the losing of the first wall and put themselves into boats and into a certain ship got hardly into the camp; for whilst the Syracusians in the great haven had yet the better in the fight upon the water, they gave them chase with one nimble galley. But by that time that the other two walls were taken, the Syracusians upon the water were overcome; and the Athenians which fled from those two walls got to their camp with more ease.

For those Syracusian galleys that fought before the haven's mouth, having beaten back the Athenians, entered in disorder, and falling foul one on another, gave away the victory unto the Athenians, who put to flight not only them, but also those other by whom they had before been overcome within the haven, and sunk eleven galleys of the Syracusians and slew most of the men aboard them, save only the men of three galleys, whom they took alive.

Of their own galleys they lost only three. When they had drawn to land the wreck of the Syracusian galleys and erected a trophy in the little island over against Plemmyrium, they returned to their camp.

The Syracusians, though such were their success in the battle by sea, yet they won the fortification in Plemmyrium, and set up three trophies, for every wall one. One of the two walls last taken they demolished; but two they repaired and kept with a garrison.

At the taking of these walls, many men were slain and many taken alive; and their goods, which altogether was a great matter, were all taken. For the Athenians using these works for their storehouse, there was in them much wealth and victual belonging unto merchants and much unto captains of galleys. For there were sails within it for forty galleys, besides other furniture, and three galleys drawn to land.

And this loss of Plemmyrium was it that most and principally impaired the Athenians' army. For the entrance of their provision was now no longer safe; for the Syracusians lying against them there with their galleys kept them out, and nothing could be brought in unto them but by fight; and the army besides was thereby otherwise terrified and dejected.