Noun
a Crusade under papal control from 1218 to 1221 that achieved military victories but failed when dissension arose over accepting the terms they had been offered
Source: WordNetDeath and legacy Innocent III honored by the U.S. House of Representatives The Council had set the beginning of the Fifth Crusade for 1217, under the direct leadership of the Church. Source: Internet
Edbury, Kingdom of Cyprus and the Crusades, p. 48. Fifth Crusade and Frederick II Frederick II (left) meets al-Kamil (right). Source: Internet
Gregory stated that the reason for the excommunication was Frederick's reluctance to go on crusade, dating back to the Fifth Crusade. Source: Internet
He participated in the Fifth Crusade to the Holy Land in 1217–1218, but the crusade was a failure. Source: Internet
It began seven years after the failure of the Fifth Crusade and involved very little actual fighting. Source: Internet