Plutarch, Camillus
Bernadotte Perrin, Ed.

23. The siege lasted a long time, and the Gauls began to lack provisions. They therefore divided their forces. Some remained with their king and watched the Capitol, others ravaged the country round about, falling upon the villages and sacking them, not all together in one body, hut scattered about by commands and companies, some here, some there, moved by their successes to great confidence and the fear of nothing. [2] The largest and best disciplined body of them marched upon the city of Ardea, where Camillus was staying since his exile. He lived in complete retirement and privacy, it is true, but cherished the hopes and plans not of a man who eagerly desired to escape the notice and hands of the enemy, but of one who sought to avenge himself upon them if occasion offered. [3] Wherefore, seeing that the Ardeans were of sufficient numbers, but lacked courage, through the inexperience and effeminacy of their generals, he began to reason with the young men first, to the effect that the mishap of the Romans ought not to be laid to the valour of the Gauls, nor the sufferings of that infatuated people to the prowess of men who did not deserve their victory, but rather to the dictates of fortune. [4] It was a fine thing, he said, even at dangerous risks, to repel the attack of an alien and barbarous folk, whose only end in getting the mastery was, as in the work of fire, the utter destruction of what it conquered. But in the present case, if they were bold and zealous, he would find occasion to give them a victory without any danger.

After gaining the support of the young men, Camillus went to the rulers and councillors of Ardea, and when he had won them over also, he armed all who were of age for service and kept them together within the walls, that they might not be perceived by the enemy, who were near. [5] These had scoured the country round about, and encamped in the plain, without care or concern, and heavily encumbered with their abundant booty. When night had fallen upon them, putting an end to their carousals, and silence reigned throughout their camp, Camillus, acquainted with this by his scouts, led forth the Ardeans. Passing quietly over the intervening space, they reached the camp about midnight, and with shouts and trumpet blasts on every hand confounded the men, who were scarcely brought to their senses by the din, heavy as they were with drunkenness and sleep. [6] A few of them were sobered by fear, armed themselves, and made resistance to Camillus and his men, so that they fell fighting; but most were still mastered by sleep and wine when they were fallen upon and slain without their arms. A few only ran from the camp, under cover of darkness, and when day came, were seen straggling about the fields, but horsemen pursued them and cut them to pieces.