History of the Peloponnesian War

With this force Cnemus commenced his march, without waiting the arrival of the fleet from Corinth: and in their passage through the Argive country they sacked Limnaea, an unfortified village; and then went against Stratus, the capital city of Acarnania, thinking that if they took that first, the other towns would readily surrender to them.

The Acarnanians, finding that a large army had invaded them by land, and that the enemy would also be upon them with a fleet by sea, did not prepare to make any united resistance, but to defend their own separate possessions; while they sent to Phormio, and desired him to succour them; who, however, said that it was impossible for him to leave Naupactus unprotected, while a fleet was on the point of sailing out from Corinth.

So the Peloponnesians and their allies, having formed themselves into three divisions, were advancing to the city of Stratus;

that after encamping near to it, they might attempt the wall by force, if they could not prevail on them [to surrender] by words. As they advanced, the Chaonians and the rest of the barbarians occupied the centre; the Leucadians and Anactorians, and those with them, were on their right; and Cnemus with the Peloponnesians and Ambraciots on their left: but they were at a considerable distance from each other, and sometimes not even within sight.

The Greeks advanced in good order, and keeping a look-out, until they had encamped in a convenient position; but the Chaonians, confident in themselves, and being reputed by the inhabitants of those parts of the continent to be the most warlike tribe, did not wait to take up their position, but rushing on with the rest of the barbarians thought they should take the town at the first assault, and so the achievement would be all their own.

The Stratians, informed of this while they were yet coming on, and thinking that if they could defeat them while thus by themselves, the Greeks would not attack them with the same eagerness, laid an ambush near the walls; and when they had come near, attacked them in close combat, both from the town and from the ambuscade.