Aistulf on his part was equally determined, and war became inevitable. He would make no promise concerning the conquered territory, but would grant a safe conduct to Stephen back to his own diocese. The lateness of the season allowed of no lengthened negotiations. Immediately after the receipt of Aistulf’s answer Pepin began his march towards Italy, accompanied by Stephen; and having sent forward a detachment to occupy the passes of the Alps, he followed it with the whole force of the empire. Passing through Lyons and Vienne, he made his way to Maurienne, with the intention of crossing the Alps by the valley of Susa, at the foot of Mont Cenis. This important pass, however, had been occupied by Aistulf, who had pitched his camp there and was prepared to dispute the passage. According to the chroniclers, he endeavoured to strengthen his position by the same warlike machines which he had “wickedly designed for the destruction of the Roman state and the apostolic chair.” The onward march of the Franks was effectually checked for the moment.
Pepin pitched his camp on the river Arc. In a short time, however, a few of his more adventurous soldiers made their way through the mountains into the valley of Susa, where Aistulf lay. Their inferior numbers emboldened the Lombards, who immediately attacked them. “The Franks,” says Fredegarius,
The terrible ravages of the invaders, who plundered and burned all the towns and villages which lay along their route, and the imminent danger which threatened himself and his royal city subdued for the moment the stubborn spirit of Aistulf, and he earnestly besought the Frankish prelates and nobles to intercede for him with their “merciful” sovereign. He promised to restore Ravenna and all the other towns which he had taken “from the holy see,” to keep faithfully to his allegiance to Pepin, and never again to inflict any injury on the apostolic chair or the Roman state. The pope himself, who had no desire to see the Franks too powerful in Italy, earnestly begged his mighty protector “to shed no more Christian blood, but to put an end to the strife by peaceful means.” Pepin was by no means sorry to be spared the siege of Pavia, and having received forty hostages and caused Aistulf to ratify his promises by the most solemn oaths, he sent the pope with a splendid retinue to Rome, and led his army homewards laden with booty.
SECOND WAR WITH THE LOMBARDS
[755-756 A.D.]
But Aistulf was not the man to sit down quietly under a defeat, or to forego a long-cherished purpose. In the following year he renewed the attack upon the Roman territory with a fury heightened by the desire of vengeance. Rome itself was besieged, and the church of St. Peter on the Vatican sacrilegiously defiled. Pope Stephen II,