Description of Greece

At the beginning of the fight the Gauls offered a spirited resistance, especially the company attached to Brennus, which was composed of the tallest and bravest of the Gauls, and that though they were shot at from all sides, and no less distressed by the frost, especially the wounded men. But when Brennus himself was wounded, he was carried fainting from the battle, and the barbarians, harassed on all sides by the Greeks, fell back reluctantly, putting to the sword those who, disabled by wounds or sickness, could not go with them.

They encamped where night overtook them in their retreat, and during the night there fell on them a “panic.” For causeless terrors are said to come from the god Pan. It was when evening was turning to night that the confusion fell on the army, and at first only a few became mad, and these imagined that they heard the trampling of horses at a gallop, and the attack of advancing enemies; but after a little time the delusion spread to all.

So rushing to arms they divided into two parties, killing and being killed, neither understanding their mother tongue nor recognizing one another's forms or the shape of their shields. Both parties alike under the present delusion thought that their opponents were Greek, men and armour, and that the language they spoke was Greek, so that a great mutual slaughter was wrought among the Gauls by the madness sent by the god.

Those Phocians who had been left behind in the fields to guard the flocks were the first to perceive and report to the Greeks the panic that had seized the barbarians in the night. The Phocians were thus encouraged to attack the Celts with yet greater spirit, keeping a more careful watch on their encampments, and not letting them take from the country the necessities of life without a struggle, so that the whole Gallic army suffered at once from a pressing shortage of corn and other food.