Abstract: This article studies two rewritings of the history of the crusades: the Historia Gotefridi by Benedetto Accolti and the Historia Jerusalemitana by Thomas Ebendorfer. Its aim is to reveal the modality of discourses calling for recruits to take on the infidels using historiographical argumentation. The use of sources (particularly the tales of the first crusade) shows that the act of rewriting represents an original way of thinking about the crusade against the Turks in the fifteenth century.