The Albigensian Crusade further complicates things in terms of defining a crusade because it was not a crusade fought in the Middle East to regain territory, but rather a crusade in south eastern France against suspected heretics, the Cathars. The church called for men to swear oaths of 40 days of service as a sort of max contract alongside their inquisitors who kept detailed documents on everyone to attempt to find the suspected ring leaders. This again is considered a crusade yet there were no invading Muslims, no one place as a target, and no Holy Land. To conclude with evidence supported by Housley, he states “Crusades against Christians were fought in numerous parts of Europe” (pg.
