History of the Peloponnesian War

And likewise he practised with the Chalcideans of Thrace and with the Bottiaeans to revolt with them; for if he could make these confining cities his confederates, with the help of them he thought his war would be the easier.

Which the Athenians perceiving and intending to prevent the revolt of these cities, gave order to the commanders of the fleet (for they were now sending thirty galleys with a thousand men of arms under the command of Archestratus the son of Lycomedes, and ten others, into the territories of Perdiccas) both to receive hostages of the Potidaeans and to demolish their walls, and also to have an eye to the neighboring cities that they revolted not.