History of the Peloponnesian War

At dawn of day he fell upon the Ambraciots, while they were yet in their beds, and had had no notice of his measures, but much rather imagined that his forces were their own countrymen.

For Demosthenes had purposely posted the Messenians first, with orders to address them, speaking in the Doric dialect, and so creating confidence in the sentinels; while at the same time they were not visible to the eye, as it was still night.

When therefore he fell upon them, they routed them, and slew the greater part on the spot; the rest rushed in flight over the mountains.

But as the roads were preoccupied, and the Amphilochians, moreover, were well acquainted with their own country, and light-armed against a heavy-armed enemy, whereas the Ambraciots were unacquainted with it, and knew not which way to turn, they perished by falling into ravines, and the ambushes that had been previously laid.