History of the Peloponnesian War

The party under Epitadas, which was also the main division in the island, on seeing the first post cut off, and an army advancing against themselves, closed their ranks, and advanced to meet the heavy-armed of the Athenians, with a wish to engage with them; for they were stationed on their front, but the light-armed on their flanks and rear. They could not however come up with them, and avail themselves of their superior skill in arms;

(for the light troops kept them in check with their missiles from both sides; while at the same time the heavy-armed did not come on to meet them, but remained still;) but the irregulars, on whatever point they ran up and charged them most closely, they routed; and these again would retreat, and still defend themselves, being lightly equipped, and easily getting a good start in their flight, from the difficult nature of the ground, and its rough condition through being before uninhabited, over which the Lacedaemonians with their heavy armour could not pursue them.