History of the Peloponnesian War

When the Thebans were aware of it, they marched to the rescue; and having overtaken the Thracians when they had not at present advanced any great distance, they both recovered their plundered property, and having struck them with panic pursued them down to the sea, where their boats which conveyed them were lying at anchor.

And they slew the greatest part of them during their embarkation, as they could not swim, and as those on board the boats, on seeing what was going on ashore, moored them out of bow-shot. For in the rest of the retreat the Thracians advanced in no contemptible manner to meet the Theban horse, which first fell upon them; and closing their ranks, according to their native tactics, defended themselves against them; and thus only a few were killed in that part of the affair. Some portion of them also were surprised in the city, through their eagerness in plundering, and perished. Altogether, there fell of the Thracians two hundred and fifty out of thirteen hundred;