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.
Accordingly, about the third watch they moved out to attack the camp.
After allaying the confusion caused by the sudden alarm, Quinctius ordered the soldiers to remain quietly in their quarters, marched out a cohort of Hernicans to the outposts, mounted the buglers and trumpeters on horseback, and ordered them to sound their calls and keep the enemy on the alert till dawn.
For the remainder of the night all was so quiet in the camp that the Romans even enjoyed ample sleep. The sight of the armed infantry whom the Volscians took to be Romans and more numerous than they really were, the noise and neighing of the horses, restless under their inexperienced riders and excited by the sound of the trumpets, kept the enemy in constant apprehension of an attack.
At daybreak the Romans, fresh from their undisturbed sleep, were led into action, and at the first charge broke the Volscians, worn out as they were with standing and want of sleep.
It was, however, a retreat rather than a rout, for in their rear there were hills to which all behind the front ranks safely retired. When they reached the rising ground, the consul halted his army. The soldiers were with difficulty restrained, they clamoured to be allowed to follow up the beaten foe.