History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
Brasidas and Perdiccas meanwhile marched together a second time[*](ch. ch. lxxxiii.) to Lyncus against Arrhabaeus. The latter led the force of the Macedonians, over whom he held sway, and a body of Hellenic hoplites resident among them; the former led not only the Peloponnesian troops which were left in the country, but also such forces from Chalcidice, Acanthus and the other towns as they could each furnish. The total Hellenic force was about three thousand; the cavalry that went with them, Macedonians and Chalcidians, were all told a little less than one thousand, and there was besides a great multitude of barbarians.
Invading the country of Arrhabaeus and finding the Lyncestians encamped against them, they also took up a position facing them.
The infantry occupied a hill on either side, with a plain between, while the cavalry of both armies at first galloped down into the plain and engaged in battle; then Brasidas and Perdiccas, after the Lyncestian hoplites had come forward from the hill in conjunction with their own cavalry and were ready to fight, advanced also in their turn and joined battle, routing the Lyncestians and destroying many, while the rest escaped to the high places and kept quiet.