History of the Peloponnesian War

When they had come to close combat, they withstood each other's attacks for a long time. And there happened to come on at once both thunder, and lightning, and heavy rain: so that to those who were fighting for the first time, and had had very little acquaintance with war, even this helped to increase their fear; while to the more experienced party these occurrences appeared to be produced simply by the season of the year, but the fact of their opponents not being defeated caused far greater alarm.

But when the Argives had first driven in the left wing of the Syracusans, and after them the Athenians had repulsed those opposed to them, the rest of the Syracusan army was now also broken and put to flight.

The Athenians did not pursue them to any great distance, (for the Syracusan horse, which was numerous and unbroken, kept them in check, and by charging their heavy infantry, wherever they saw any pursuing in advance of the rest, drove them back again.) However they followed them in a body as far as was safe, and then returned again, and erected a trophy.

The Syracusans, on the other hand, having collected themselves again on the Helorine road, and put themselves in as good order as present circumstances would permit, sent, notwithstanding their defeat, a garrison to the Olympieum, fearing that the Athenians might take some of the treasures that were there; while the rest of them returned into the city.