The Knights of St. John, also known as the Order of St. John, is a Christian military order founded in the 11th century. Originally established to provide care for sick and injured pilgrims in the Holy Land, the order evolved into a military force during the Crusades. Its members, known as knights, were dedicated to defending Christianity and protecting the faithful. Over the centuries, the order expanded its influence across Europe, establishing hospitals and engaging in military campaigns. Today, the Knights of St. John focus on humanitarian efforts and charitable work, continuing their legacy of service and care for those in need.