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.
But the Athenians, when they heard the news, were far more enraged, and straightway made preparations against both cities.
And Brasidas, expecting their coming, conveyed away to Olynthus in Chalcidice the women and children of the Scionaeans and Mendaeans, and sent over to protect them five hundred Peloponnesian hoplites and three hundred Chalcidian targeteers, with Polydamidas as commander of the whole. And the two cities together made preparations for their defence, in the belief that the Athenians would soon be at hand.
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.
After this they set up a trophy and halted for two or three days, awaiting the Illyrians, who had been hired by Perdiccas and were momentarily expected. Then Perdiccas wished, on their arrival, to go forward against the villages of Arrhabaeus instead of sitting idle; but Brasidas was solicitous about Mende, fearing that it might suffer some harm if the Athenians should sail there before his return; and, besides, the Illyrians had not appeared, so that he was not eager to go on, but rather to retreat.
Meanwhile, as they were disputing, it was announced that the Illyrians had betrayed Perdiccas and taken sides with Arrhabaeus; consequently, because of their fear of these people, who were warlike, both generals now agreed that it was best to retreat. But in consequence of their dispute nothing had been determined as to when they should set out; and when night came on the Macedonians and the mass of the barbarians immediately took fright, as large armies are wont to be smitten with unaccountable panic, and thinking that the advancing enemy were many times more numerous than they really were and were all but on them, betook themselves to sudden flight and hastened homewards. Perdiccas, who at first was not aware of their movement, was compelled, when he did learn of it, to go away without seeing Brasidas; for they were encamped far away from each other.