Informed of this, Brasidas on his part took up a position of observation upon Cerdylium, a place situated in the Argilian country on high ground across the river, not far from Amphipolis, and commanding a view on all sides, and thus made it impossible for Cleon's army to move without his seeing it; for he fully expected that Cleon, despising the scanty numbers of his opponent, would march against Amphipolis with the force that he had got with him.

At the same time Brasidas made his preparations, calling to his standard fifteen hundred Thracian mercenaries, and all the Edonians, horse and targeteers; he also had a thousand Myrcinian and Chalcidian targeteers, besides those in Amphipolis,