Final answer:
The original vocation of the Knights Hospitalers was to provide medical care to the sick and injured. They were a military religious order founded in Jerusalem in the 11th century. The Knights Hospitalers played a significant role in providing medical care during war.
Step-by-step explanation:
The original vocation of the Knights Hospitalers was to provide medical care to the sick and injured. They were a military religious order founded in Jerusalem in the 11th century, and they came to Spain to fight Muslims. In 1186, they consecrated a mosque as a Christian chapel and dedicated it to the Holy Cross. The Knights Hospitalers were known for their outstanding devotion to duty and played a vital role in providing medical care during war.