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.
When Fabius saw that the enemy were holding their ground in every part of the field, he rode up to the first line with his son, Maximus, and Marcus Valerius, both
military tribunes, and ordered them to go to the cavalry and tell them that if they remembered any single occasion on which the republic had been aided by the efforts of the
cavalry, they should that day strive their utmost to sustain the reputation of that invincible arm of the State, for the enemy were standing immovable against the infantry and all their hopes rested on the cavalry.
He made a personal appeal to each of them, showering commendations upon them and holding out the prospect of great rewards.
Since, however, the cavalry charge might fail in its object, and attacking in force prove useless, he thought he ought to adopt a stratagem. Scipio, one of his staff, received instructions to draw off the hastati of the first legion and, attracting as little observation as possible, take them to the nearest hills.
Then climbing up where they could not be seen, they were suddenly to show themselves in the enemy's rear. The cavalry, led by the two young tribunes, dashed out in front of the standards, and their sudden appearance created almost as much confusion amongst their own people as amongst the enemy.
The Samnite line stood perfectly firm against the galloping squadrons, nowhere could they be forced back or broken. Finding their attempt a failure, the cavalry retired behind the standards and took no further part in the fighting.
This increased the courage of the enemy, and the Roman front could not have sustained the prolonged contest, met as they were by a resistance which was becoming more stubborn as its confidence rose, had not the consul ordered the second line to relieve the first.