History of the Peloponnesian War

This was the largest army of Athenians that had ever been assembled in one body, for the city was still at the height of its strength and not as yet stricken by the plague; the Athenians themselves numbered not less than ten thousand heavy infantry, not including the three thousand at Potidaea[*](Thuc. 1.61.4.) and there were three thousand heavy-armed aliens who took part in the invasion, and, besides, a considerable body of light-armed troops. After they had ravaged most of the Megarian country they retired.