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.
Now the Corcyraeans took over the prisoners and shut them up in a large building; afterwards they led them out in groups of twenty and marched them down between two lines of hoplites stationed on either side, the prisoners being bound to one another and receiving blows and stabs from the men who stood in the lines, if any of these perchance saw among them a personal enemy; and men with scourges walked by their sides to quicken the steps of such as proceeded too slowly on the way.
In this manner about sixty men were led out and killed without the knowledge of the men who remained in the house, who supposed that their companions were being led out in order to be transferred to some other place. But when they perceived what was going on, or were told by somebody, they appealed to the Athenians and urged them, if they wished to kill them, to do so with their own hands; and they refused thenceforth to leave the house, and declared that they would not allow anyone to enter if they could prevent it.
Nor had the Corcyraeans themselves any intention of trying to force their way in by the doors, but climbing on to the top of the building and breaking through the roof they hurled tiles and shot arrows upon them from above.
The men inside tried to defend themselves as best as they could, and at the same time most of them set to work to destroy themselves by thrusting into their throats the arrows which the enemy had shot or by strangling themselves with the cords from some beds that happened to be in the place or with strips made from their own garments. Thus for the greater part of the night—for night fell upon their misery—dispatching themselves in every fashion and struck by the missiles of the men on the roof, they perished.
When day came the Corcyraeans loaded the bodies on wagons, laying them lengthwise and crosswise, and hauled them out of the city; but the women who had been captured in the fort were sold into captivity.