History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
The consequence was, that by this unexpected and sudden charge on both sides, the enemy were thrown into confusion; and their left wing, on the side of Eion, which had already advanced some distance, immediately broke away and fled.
When it was now on its retreat, Brasidas, in advancing along to attack the right wing, received a wound; and while the Athenians did not observe his fall, those who were near him took him up, and carried him off the field. The right of the Athenians, however, stood its ground better; and though Cleon, who from the first had no intention of making a stand, immediately fled, and was overtaken and killed by a Myrcinian targeteer, his heavy-armed retreated in a close body to the hill, and repulsed the charge of Clearidas twine or thrice, and did not give way till the Myrcinian and Chalcidian horse, with the targeteers, having surrounded them, and pouring their missiles upon them, put them to the rout.