Thucydides, History of the Peloponnesian War
Benjamin Jowett, Ed.

128. Perceiving their intention, he told his three hundred to leave their ranks and run every man as¹ fast as he could to the top of one of the hills, being the one which he thought the barbarians would be most likely to occupy; and before a larger number of them could come up and surround them, to dislodge those who were already there². [2] They accordingly attacked and defeated them; and so the main body of his army more easily reached the summit; for the barbarians, seeing their comrades defeated and driven from the high ground, took alarm; they considered too that the enemy were already on the borders of the country, and had got away from them, and therefore followed no further. [3] Brasidas had now gained the high ground and could march unmolested; on the same day he arrived at Arnissa, which is in the dominion of Perdiccas. [4] The soldiers were enraged at the hasty retreat of the Macedonians, and when they came upon carts of theirs drawn by oxen, or any baggage which had been dropped in the flight, as was natural in a retreat made in a panic and by night, they of themselves loosed the oxen and slaughtered them, and appropriated the baggage. [5] From that time forward Perdiccas regarded Brasidas in the light of a foe, and conceived a new hatred of the Peloponnesians, which was not a natural feeling in an enemy of the Athenians. Nevertheless, disregarding his own nearest interests, he took steps to make terms with the one and get rid of the other.