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.
Vitrubius had neither the prudence to remain within his lines in presence of an enemy stronger than himself nor the courage to fight at a distance from his camp.
He gave battle whilst his men were hardly clear of their camp, and thinking more of retreating back to it than of the battle or the enemy, was with very little effort put to a decisive defeat.
Owing to the proximity of the camp retreat was easy, and he had not much difficulty in protecting his men from serious loss; hardly any were killed in the actual battle, and only a few in the rear of the crowded fugitives as they were rushing into their camp As soon as it grew dark they abandoned it for Privernum, trusting to stone walls for protection rather than to the rampart round their camp.