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.
On hearing that they had formed an entrenched camp and were preparing to advance on their city, the Veientes went out against them, preferring a combat in the open to being shut up and having to fight from houses and walls.
Romulus gained the victory, not through stratagem, but through the prowess of his veteran army. He drove the routed enemy up to their walls, but in view of the strong position and fortifications of the city, he abstained from assaulting it. On his march home-wards, he devastated their fields more out of revenge than for the sake of plunder.