 Peter, probably aided by knights from France and Catalonia, certainly did make war on Zaragoza in 1101, in a campaign that lasted the whole year.He may have been inspired by the First Crusaders, since contemporary accounts of the 1101 campaign call him a "cross-bearer" ("crucifer").The size of his forces so impressed a contemporary scribe in León that he remarked in the dating formula of a document of 12 February that "Peter, Aragonese king, with his infinite multitude of armed men, the city of Zaragoza, with Christ's banner, fought".