History of the Peloponnesian War

Chalcideus and Alcibiades, when they had chased Strombichides into Samos, armed the mariners that were in the galleys of Peloponnesus and left them in Chios, instead of whom they manned with mariners of Chios both those and twenty galleys more; and with this fleet they went to Miletus with intent to cause it to revolt.

For the intention of Alcibiades, that was acquainted with the principal Milesians, was to prevent the fleet which was to come from Peloponnesus and to turn these cities first, that the honour of it might be ascribed to the Chians, to himself, to Chalcideus, and (as he had promised) to Endius that set them out, as having brought most of the cities to revolt with the forces of the Chians only and of those galleys that came with Chalcideus.

So these, for the greatest part of their way undiscovered, and arriving not much sooner than Strombichides and Thrasycles (who now, chancing to be present with [those] twelve galleys from Athens, followed them with Strombichides), caused the Milesians to revolt. The Athenians following them at the heels with nineteen galleys, being shut out by the Milesians, lay at anchor at Lada, an island over against the city.

Presently upon the revolt of Miletus was made the first league between the king and the Lacedaemonians by Tissaphernes and Chalcideus, as followeth: