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.
Now the census for that period gives 250,000 persons. In all the revolts of the Latin league ten legions were raised, consisting almost entirely of city troops.
Often during those years four or five armies were engaged simultaneously in Etruria, in Umbria (where they had to meet the Gauls as well), in Samnium, and in Lucania.