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.

Satisfied with this information he marched on and fixed his camp at such a distance from the enemy that while it was not close enough for his arrival to be detected it was sufficiently near to allow of his surprising them while they were leaving their camp.