History of the Peloponnesian War

The summer following, the truce for a year, which was to last till the Pythian holidays, expired. During this truce, the Athenians removed the Delians out of Delos, because [though they were consecrated, yet] for a certain crime committed of old they esteemed them polluted persons; because also they thought there wanted this part to make perfect the purgation of the island, in the purging whereof, as I declared before, they thought they did well to take up the sepulchres of the dead. These Delians seated themselves afterwards, every one as he came, in Adramyttium in Asia, a town given unto them by Pharnaces.

After the truce was expired, Cleon prevailed with the Athenians to be sent out with a fleet against the cities lying upon Thrace. He had with him of Athenians twelve hundred men of arms and three hundred horsemen, of confederates more, and thirty galleys.

And first arriving at Scione, which was yet besieged, he took aboard some men of arms of those that kept the siege and sailed into the haven of the Colophonians, not far distant from the city of Torone.

And there, having heard by fugitives that Brasidas was not in Torone nor those within sufficient to give him battle, he marched with his army to the city and sent ten of his galleys about into the haven.