CRUSADE
each of a series of medieval military expeditions made by europeans to recover the holy land from the muslims in the 11th, 12th, and 13th centuries
a vigorous campaign for political, social, or religious change
lead or take part in a vigorous campaign for social, political, or religious change
a vigorous campaign for political, social, or religious change
lead or take part in a vigorous campaign for social, political, or religious change