The Seventh Crusade (1248-1254 CE) was led by the French king Louis IX (r. 1226-1270 CE) who intended to conquer Egypt and take over Jerusalem, both then controlled by the Muslim Ayyubid Dynasty.
Religious militancy exists in every type of religion. Almost always, those who practice this kind of radical militancy in the name of a particular religion represent only a small fraction of that religion's followers.
