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.
They assigned to him the legions in the City which Quinctius was commanding, and though he would have preferred the army which was acting against the Volsci, of which he had had experience and which was accustomed to his command, he raised no objection; all he asked for was that Valerius should share the command with him.
Quinctius and Horatius were sent against the Volscian in succession to Valerius. When they reached Sutrium, Furius and Valerius found a part of the city in the hands of the Etruscans; in the rest of the place the inhabitants were with difficulty keeping the enemy at bay behind barricades which they had erected in the streets.
The approach of succours from Rome and the name of Camillus, famous amongst allies and enemies alike, relieved the situation for the moment and allowed time to render assistance.
Camillus accordingly formed his army into two divisions and ordered his colleague to take one round to the side which the enemy were holding and commence an attack on the walls. This was done not so much in the hope that the attack would succeed as that the enemy's attention might be distracted so as to afford a respite to the wearied defenders and an opportunity for him to effect an entrance into the town without fighting.
The Etruscans, finding themselves attacked on both sides, the walls being assaulted from without and the townsmen fighting within, flung themselves in one panic-stricken mass through the only gate which happened to be clear of the enemy.