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.

but the rest met in an obstinate engagement, shield to shield. And the Boeotian left, and as far as the centre, was beaten by the Athenians, who pressed hard both the others posted there, and especially the Thespians. For the troops next to them in the line having given way, and the Thespians being thus surrounded in a narrow space, those of them who were killed were cut down while defending themselves hand to hand:

and some of the Athenians also, being thrown into confusion through surrounding the enemy, failed to recognise their own men, and so killed each other. This part then of the Boeotian line was beaten, and retreated on that which was still fighting;

but their right, where the Thebans were posted, had the advantage over the Athenians, and drove them back, and pursued them, though but gradually at first. It happened also, that Pagondas having secretly sent two squadrons of horse round the hill when his left was distressed, and these suddenly making their appearance, the victorious wing of the Athenians, thinking that another army was coming against them, was seized with a panic;