History of the Peloponnesian War
Thucydides
Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.
the rest took to flight over the mountains.
But as the roads had already been occupied, and as, moreover, the Amphilochians were well acquainted with their own country and were light infantry opposing heavy-armed troops, whereas the Ambraciots were ignorant of the country and did not know which way to turn, under these circumstances the fleeing men fell into ravines and into ambushes which had previously been set for them and perished.
And some of them, after resorting to every manner of flight, even turned to the sea, which was not far distant, and seeing the Athenian ships, which were sailing along the coast at the very time when the action was taking place, swam toward them, thinking in the panic of the moment that it was better for them to be slain, if slain they must be, by the crews of the ships than by the barbarian and detested Amphilochians.
In this manner, then, the Ambraciots suffered disaster, and but few out of many returned in safety to their city; the Acarnanians, on the other hand, after stripping the dead and setting up trophies, returned to Argos.