History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
These merchant-ships he placed at intervals of about two hundred feet from one another, in order that any ships which should be hard pressed might find safe refuge inside and again sail out at leisure. In these preparations the Athenians spent the whole day until nightfall.
On the day following the Syracusans came into conflict with the Athenians at an earlier hour, but using the same offensive as before both by land and by sea.
The two fleets faced one another in the same fashion and again spent a great part of the day in skirmishing, until at last Ariston son of Pyrrhichus, a Corinthian, the best pilot of the Syracusan fleet, persuaded the commanders of the Syracusan naval forces to send word to the officers in control in the city and request them to move down to the shore as quickly as possible the market in which goods are offered for sale, forcing all the hucksters to bring there whatever food supplies they had and sell them, in order that the crews might land and at once take dinner close to the ships, and then after a short interval on the same day make a second attack on the Athenians when they were not expecting it.
The Syracusan commanders accordingly, being won over to this plan, sent a messenger, and the market was prepared. Then the Syracusans, suddenly rowing astern, sailed back to the city, where they disembarked and at once made their dinner on the spot.