History of the Peloponnesian War

Now the army of the Thracians, advancing from Doberus, overran first of all what had once been the government of Philip; and took Idomene by storm, and Gortynia, Atalanta, and some other places by capitulation, as they came over to him from their friendship for Amyntas, Philip's son, who was with him. To Europus they laid siege, but could not reduce it. Afterwards he advanced into the rest of Mace- Ionia, on the left of Pella and Cyrrhus.

Beyond these they did not march, namely, into Bottiaea and Pieria, but stayed to lay waste Mygdonia, Crestonia, and Anthemus. The Macedonians, meanwhile, had not even a thought of resisting them with their infantry;

but having sent for an additional supply of horse from their allies in the interior, attacked the Thracian host, few as they were against so many, wherever an opportunity offered. And wherever they charged them, no one stood his ground against troops who were excellent horsemen and armed with breastplates; but surrounded as they were by superior numbers, they exposed themselves to peril by fighting against that crowd of many times their own number: so that at length they kept quiet, not thinking themselves able to run such hazards against a force so far superior.

In the mean time, Sitalces conferred with Perdiccas on the objects of his expedition; and since the Athenians had not joined him with their fleet, (not believing that he would come,) but had sent presents and envoys to him, he sent a part of his forces against the Chalcidians and Bottiaeans, and after shutting them up within their walls, laid waste their country.