History of the Peloponnesian War

Chalcideus and Alcibiades, after chasing Strombichides into Samos, armed the seamen on board the vessels from the Peloponnese, and left them at Chios; and having manned these with substitutes from Chios, and twenty besides, they sailed to Miletus to effect its revolt.

For Alcibiades, being on intimate terms with the leading men of the Milesians, wished to anticipate the ships from the Peloponnese by winning them over, and so to secure that honour, as he had promised, to the Chians, himself, Chalcideus, and Endius who had sent them out, by causing the revolt of as many cities as possible in concert with the Chian forces and Chalcideus.

Having made therefore the chief part of their passage unobserved, and having arrived a little before Strombichides and Thrasycles, who had just come from Athens with twelve ships, and joined in the pursuit of them, they prevailed on Miletus to revolt. The Athenians sailed up close after them with nineteen ships, and on the Milesians not admitting them, came to anchor at the adjacent island of Lade.

And now the first alliance made between the king and the Lacedaemonians was concluded by Tissaphernes and Chalcideus, immediately after the revolt of the Milesians, to the following effect: