History of the Peloponnesian War

The Macedonians, unable to stand in the field against so huge an army, retired all within their strongholds and walled towns, as many as the country afforded,

which were not many then, but were built afterwards by Archelaus the son of Perdiccas when he came to the kingdom, who then also laid out the highways straight and took order both for matter of war, as horses and arms and for other provision, better than all the other eight kings that were before him. The Thracian army, arising from Doberus, invaded that territory first which had been the principality of Philip and took Eidomene by force;

but Gortynia, Atalanta, and some other towns he had yielded to him for the love of Amyntas the son of Philip, who was then in the army. They also assaulted Europus but could not take it. Then they went on further into Macedonia on the part that lies on the right hand of Pella and Cyrrhus;

but within these into Bottiaea and Pieria they entered not but wasted Mygdonia, Crestonia, and Anthemus. Now the Macedonians had never any intention to make head against them with their foot;

but sending out their horsemen, which they had procured from their allies of the higher Macedonia, they assaulted the Thracian army in such places where, few against many, they thought they might do it with most convenience. And where they charged, none was able to resist them, being both good horsemen and well armed with breastplates; but enclosed by the multitude of the enemies, they fought against manifest odds of number so that in the end they gave it over, esteeming themselves too weak to hazard battle against so many.

After this Sitalces gave way to a conference with Perdiccas touching the motives of this war. And forasmuch as the Athenians were not arrived with their fleet (for they thought not that Sitalces would have made the journey, but had sent ambassadors to him with presents), he sent a part of his army against the Chalcideans and Bottiaeans, wherewith, having compelled them within their walled towns, he wasted and destroyed their territory.