Pope Innocent III (p.1198-1216), who was perhaps the most ardent supporter of Crusade to hold the Papacy, issued the Papal Bull Quia maior in April 1213 calling for a new Crusade to recapture Jerusalem.[1] This Bull set the standard for all future Crusading Bulls; in it, Innocent introduced many new concepts that widened the appeal of Crusading in Christendom. This was the first time that the indulgence had been expanded to include those who could not go on Crusade, they could gain the indulgence by supporting the Crusade financially. Innocent intended for this new Crusade to be led by the church and he worked tirelessly to see the Crusade come to fruition.
           The response to the new call for Crusade was tremendous throughout Europe except for France where the nobility was engaged in suppressing the Albigensian heresy. Duke Leopold VI of Austria (1176-1230) led a large contingent from Austria on Crusade. In Hungary, Andrew II (1205-1235) had taken the cross during the Fourth Crusade but had not fulfilled his vow so he now joined this new effort in its fulfillment. A churchman Oliver of Paderborn the Bishop of Cologne gathered a large army in Northwest Germany, Holland, and Flanders, which he then led on the Crusade himself. Oliver also wrote an account of the Fifth Crusade that is one of the most valuable sources extant. Frederick II, Holy Roman Emperor (1205-1250) also took the cross promising to lead a massive army of Germans but he first had to cement the control of his empire.
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