The "Twelve Crusade" refers to a series of military campaigns during the medieval period, primarily aimed at reclaiming the Holy Land from Muslim control. These expeditions were part of the larger Crusades that began in the late 11th century, with various European powers participating. The term "Twelve Crusade" specifically highlights the twelfth major military effort, which took place in the early 12th century. The twelfth campaign was marked by a lack of unity among the Christian forces and faced significant challenges, including logistical issues and strong resistance from Muslim leaders. Despite these obstacles, the Crusades had lasting impacts on Christianity, Islam, and the political landscape of the Middle East.