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.

Whilst the Romans were thus occupied, the army of the Antemnates seized the opportunity of their territory being unoccupied and made a raid into it. Romulus hastily led his legion against this fresh foe and surprised them as they were scattered over the fields.