Recourse to prayer on the Christians' part, however, produced a great miracle, for the walls tottered and fell like those of Jericho.

All the Saracens who embraced Christianity were spared, but the remainder were slain before the emperor journeyed to the shrine of St.James at Santiago de Compostela to pay his devotions.
A triumphant march through the country then ensued, and Charlemagne returned to France, thinking the Saracens subdued.

He had scarcely crossed the border, however, when Aigolandus, one of the pagan monarchs, revolted, and soon recovered nearly all the territory his people had lost.

When Charlemagne heard these tidings, he sent back an army, commanded by Milon, Roland's father, who perished gloriously in this campaign.

The emperor speedily followed his brother-in-law with great forces, and again besieged Aigolandus in Pamplona.