The Knights Templar, a medieval Christian military order, played a crucial role during the Crusades, which aimed to reclaim the Holy Land from Muslim control. Founded in the early 12th century, the Templars combined monastic life with military duty, taking vows of poverty, chastity, and obedience. They were recognized for their distinctive white mantles adorned with a red cross. The Templars provided protection for pilgrims traveling to Jerusalem and became skilled financial managers, establishing an early banking system. Their military prowess and organizational structure enabled them to participate actively in battles and sieges, demonstrating significant influence in the Crusader states until their dissolution in the early 14th century.