On the approach of the Spanish army, the duke of Guise saw the necessity of bringing his operations against Civitella to a decisive issue. He accordingly, as a last effort, prepared for a general assault. But, although it was conducted with great spirit, it was repulsed with still greater by the garrison; and the French commander, deeply mortified at his repeated failures, saw the necessity of abandoning the siege. He could not effect even this without sustaining some loss from the brave defenders of Civitella, who sallied out on his rear, as he drew off his discomfited troops to the neighboring valley of Nireto. Thus ended the siege of Civitella, which, by the confidence it gave to the loyal Neapolitans throughout the country as well as by the leisure it afforded to Alva for mustering his resources, may be said to have decided the fate of the war. The siege lasted twenty-two days, during fourteen of which the guns from the four batteries of the French had played incessantly on the beleaguered city. The viceroy was filled with admiration at the heroic conduct of the inhabitants; and, in token of respect for it, granted some important immunities, to be enjoyed for ever by the citizens of Civitella. The women, too, came in for their share of the honors, as whoever married a maiden of Civitella was to be allowed the same immunities, from whatever part of the country he might come.[164] The two armies were now quartered within a few miles of each other. Yet no demonstration was made, on either side, of bringing matters to the issue of a battle. This was foreign to Alva's policy, and was not to be expected from Guise, so inferior in strength to his antagonist. On the viceroy's quitting Giulia Nuova, however, to occupy a position somewhat nearer the French quarters, Guise did not deem it prudent to remain there any longer, but, breaking up his camp, retreated, with his whole army, across the Tronto, and, without further delay, evacuated the kingdom of Naples.