Titus Livius (Livy), The History of Rome, Book 4
D. Spillan, A.M., M.D., Ed.

22. The dictator orders all to attend at break of day out- side the Colline gate. All whosoever had sufficient strength to bear arms, attended; the standards were quickly brought forth from the treasury and conveyed to the dictator. [2] Whilst these matters were going on, the enemies retired to the higher grounds; thither the dictator follows them with a determined army; and having come to a general engagement not far from Nomentum, he routed the Etrurian legions; he then drove them into the city of Fidenae, and surrounded it with a rampart. [3] But neither could the city be taken by storm as being high and well fortified, nor was there any effect in a blockade, because corn was supplied to them in abundance not only for necessary consumption, but for plenty also, in consequence of that previously laid up. [4] Thus all hope being lost of taking it by assault, or of forcing it to a surrender, the dictator determined on carrying a sap into the citadel in places which were well known to him on account of their near situation on the remote side of the city, as being most neglected because it was best protected by reason of its own nature; [5] he himself by advancing up to the walls in places most remote, with his army divided into four sections, which were to succeed each other in the action, by continuing the fight day and night continuously he prevented the enemy from perceiving the work; until the mountain being dug through from the camp, a passage was opened up into the citadel; [6] and the Etrurians being diverted from the real danger by the idle threats the shouting of the enemy over their heads proved to them that their city was taken. [7] On that year Caius Furius Pacilus and Marcus Geganius Macerinus, censors, approved of the public edifice¹ in the Campus Martius, and the census of the people was there performed for the first time.