History of the Peloponnesian War

Now by the rest of the town of the Toronaeans, and by the Athenians who were in garrison in it, he was not observed; but his partisans, knowing that he would come, and some few of them having privately visited him, were watching for his arrival. And when they found that he was come, they took in to them seven light-armed men with daggers; (for such only was the number, out of twenty who were at first appointed to the work, that were not afraid to enter, their commander being Lysistratus, an Olynthian.) These having passed through the sea-ward wall, and escaped observation, went up and put to the sword the garrison in the highest guard-house, (for the town stands on a hill, and broke open the postern towards Canastraeum.

Brasidas, meanwhile, after advancing a short distance, remained quiet with the rest of his army, but sent forward a hundred targeteers, that when any gates were opened, and the signal raised which had been agreed on, they might be the first to rush in.

These, having waited some time, and wondering at the delay, had come by degrees near the town; while those of the Toronaeans within, who were preparing matters with the party that had entered, after the postern had been broken open by them, and the gates leading to the market-place opened by cutting through the bar, in the first place brought a party round to the postern and introduced them, that in their rear, and on both sides of them, they might suddenly strike terror into the townsmen, knowing nothing of what was going on. Next they raised the fire-signal as had been appointed; and then received the rest of the targeteers through the gates leading to the market-place.