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.
No battle would have witnessed fewer fugitives or involved greater carnage had not the Tuscans, who had made up their minds to die, found protection in the approach of night, so that the victors were the first to desist from fighting.
After sunset the signal was given to retire, and both armies returned in the night to their respective camps. Nothing further worth mention took place that year at Sutrium. The enemy had lost the whole of their first line in a single battle and had only their reserves left, who were hardly sufficient to protect their camp.