History of the Peloponnesian War

Afterwards, however, they let the Mantineans and Peloponnesians go away, but killed the Ambraciots. And there was much contention and difficulty in distinguishing whether a man was an Ambraciot or a Peloponnesian. They killed some two hundred of them; the rest escaped into Agraea, a bordering territory, and Salaethus, king of the Agraeans, being their friend, received them.

The Ambraciots from the city arrived at Idomene. This town consists of two high hills; the greater of which, after night had come on, the troops sent forward from the camp by Demosthenes preoccupied unobserved; while the Ambraciots had previously ascended the smaller, and bivouaeked on it. Demosthenes, after supper, marched with the rest of the army as soon as it was evening;

himself with half of his force making for the pass, the remainder proceeding over the mountains of Amphilochia.