Ab urbe condita
Titus Livius (Livy)
Livy. History of Rome, Volumes 1-2. Roberts, Canon, Rev, translator. London, New York: J. M. Dent and Sons; E. P. Dutton and Co., 1912.
He advised them to remove their camp, which was almost adjoining the walls, to a distance of six miles from the town, this would lead to less vigilance on the part of those who were on outpost duty during the day and sentry duty at night. The following night, after some cohorts had been ordered to conceal themselves in some wooded spots close under the town, he conducted a picked body of ten men by a steep and almost inaccessible path into the citadel.
Here a quantity of missile weapons had been collected, far more than would be required for the men who had been brought there, and m addition there were large stones, some lying about as is usual in craggy places, others piled in heaps by the townsmen to use for the defence of the place.