The Lacedaemonians were thus engaged in Chios when towards the end of the summer there1
came from Athens a thousand Athenian hoplites and fifteen hundred Argives, of whom five hundred were originally light-armed, but the Athenians gave them heavy arms; also a thousand of the allies. They were conveyed in forty-eight ships, of which some were transports, under the command of Phrynichus, Onomacles, and Scironides.
Sailing first to Samos they crossed over to Miletus, and there took up a position. The Milesians with a force of eight hundred heavy-armed of their own, the Peloponnesians who came with Chalcideus, and certain foreign mercenaries of Tissaphernes, who was there in person with his cavalry, went out and engaged the Athenians and their allies.
The Argives on their own wing dashed forward, and made a disorderly attack upon the troops opposed to them, whom they despised; they thought that, being Ionians, they would be sure to run away2
But they were defeated by the Milesians, and nearly three hundred of them perished. The Athenians first overcame the Peloponnesians, and then forced back the barbarians and the inferior troops. But they never engaged the Milesians, who, after routing the Argives, when they saw their other wing defeated, returned to the city. The Athenians, having won the day, took up a position close under the walls of Miletus.
In this engagement the Ionians on both sides had the advantage of the Dorians; for the Athenians vanquished the Peloponnesians who were opposed to them, and the Milesians vanquished the Argives3
. The Athenians now raised a trophy, and prepared to build a wall across the isthmus which separates the city from the mainland, thinking that, if they could reduce Miletus, the other cities would quickly return to their allegiance.