History of the Peloponnesian War

And it is said that if Brasidas had not sent out his army to take booty, but had marched presently to the city, he had in all likelihood taken it then. But so it was that he pitched there and fell upon those without;

and seeing nothing succeeded by those within, lay still upon the place.

But the contrary faction to the traitors being superior in number, whereby the gates were not opened presently, both they and Eucles the general, who was then there for the Athenians to keep the town, sent unto the other general, Thucydides, the son of Olorus, the writer of this history, who had charge in Thrace, and was now about Thasos (which is an island and a colony of the Parians, distant from Amphipolis about half a day's sail), requiring him to come and relieve them.