History of the Peloponnesian War

At the same time he made further preparations, calling to his aid fifteen hundred Thracian mercenaries and all the Edonians, both targeteers and cavalry. And he had also of the Myrcinians and the Chalcidians one thousand targeteers, in addition to the troops in Amphipolis.

The whole body of hoplites collected by him was about two thousand in number, and he had three hundred Hellenic horsemen. Of these forces Brasidas took about fifteen hundred and stationed himself at Cerdylium; the rest were posted at Amphipolis under the command of Clearidas.

Cleon kept quiet for a while, then was forced to do just what Brasidas had expected.