History of the Peloponnesian War

The Plataeans, after they were ready and had attended a tempestuous night, and withal moonless, went out of the city and were conducted by the same men that were the authors of the attempt. And first they passed the ditch that was about the town and then came up close to the wall of the enemy, who, because it was dark, could not see them coming; and the noise they made as they went could not be heard for the blustering of the wind.

And they came on besides at a good distance one from the other, that they might not be betrayed by the clashing of their arms, and were but lightly armed and not shod but on the left foot for the more steadiness in the wet.