History of the Peloponnesian War

Now so long as they saw that their archers had their arrows and were able to use them, they continued to resist; for, when harassed by the bowmen, the Aetolians, being a light-armed force, retired. But when, after the fall of their leader, the archers were dispersed, and they themselves distressed by enduring for a long time the same labour, and the $Atolians were pressing hard on them, and pouring their darts on them; then indeed they turned and fled, and falling into pathless ravines and places with which they were unacquainted, were cut off: for the guide who showed them the way, Chromon the Messenian, had been killed.

And the Aetolians, still plying them with missiles, by their rapid movements (for they are swift of foot and light-armed) took many of them there in the rout, and put them to the sword; but the greater part missing their way and rushing into the forest, from which there were no roads out, they brought fire and burnt it round them.

Indeed the Athenian forces were subjected to every form of flight and death, and it was with difficulty that the survivors escaped to the sea and to Oeneon in Locris, the same place from which they had set out.

Great numbers of the allies were slain, and of the Athenians themselves about a hundred and twenty heavy-armed—so many in number, and all in the prime of their youth. These were the best men of the city of Athens that fell during this war. One of the generals also, namely, Procles, was slain.

Having taken up their dead under truce, and retired to Naupactus, they afterwards went with their ships to Athens. But Demosthenes staved behind in the neighbourhood of Naupactus and those parts, being afraid of the Athenins in sequence of what had been done.