Life of Camillus by Plutarch
XV. Gauls defeated
But Brennus, presently recollecting himself, called off his men, and, with the loss of a few only, brought them to their camp; and, rising in the night with all his forces, left the city, and, advancing about eight miles, encamped upon the way to Gabii. As soon as day appeared, Camillus came up with him, splendidly armed himself, and his soldiers full of courage and confidence; and there engaging with him in a sharp conflict, which lasted a long while, overthrew his army with great slaughter, and took their camp.
Plutarch (2011-03-30). Plutarch: Lives of the noble Grecians and Romans (Kindle Locations 3632-3669). Kindle Edition.
Of those that fled, some were presently cut off by the pursuers; others, and these were the greatest number, dispersed hither and thither, and were dispatched by the people that came sallying out from the neighboring towns and villages. Thus Rome was strangely taken, and more strangely recovered, having been seven whole months in the possession of the barbarians who entered her a little after the Ides of July, and were driven out about the Ides of February following.
Camillus triumphed, as he deserved, having saved his country that was lost, and brought the city, so to say, back again to itself. For those that had fled abroad, together with their wives and children, accompanied him as he rode in; and those who had been shut up in the Capitol, and were reduced almost to the point of perishing with hunger, went out to meet him, embracing each other as they met, and weeping for joy and, through the excess of the present pleasure, scarce believing in its truth. And when the priests and ministers of the gods appeared, bearing the sacred things, which in their flight they had either hid on the spot, or conveyed away with them, and now openly showed in safety, the citizens who saw the blessed sight felt as if with these the gods themselves were again returned unto Rome. After Camillus had sacrificed to the gods, and purified the city according to the direction of those properly instructed, he restored the existing temples, and erected a new one to Rumor, or Voice, informing himself of the spot in which that voice from heaven came by night to Marcus Caedicius, foretelling the coming of the barbarian army. It was a matter of difficulty, and a hard task, amidst so much rubbish, to discover and redetermine the consecrated places; but by the zeal of Camillus, and the incessant labor of the priests, it was at last accomplished.