They provide grip for the rider, and protection from sweat and the stirrup leather. The noodle seats in a stirrup attached to the arm. Horsemen in the Sassanid cavalry lacked a stirrup. Roman cavalry did not have a stirrup. Differing schools advocate for the stirrup or horseshoe. In 1863, the Imperial Lighthouse Service erected the lighthouse on Great Stirrup Cay. Great Stirrup Cay has a tropical climate. Advances such as the stirrup helped make cavalry forces more effective. He believed that the stirrup had made the knight. The basic tactics of mounted warfare were significantly altered by the stirrup. It is not known why the Japanese developed this unique style of stirrup. The Stirrup Jar is especially frequent. An important innovation was the invention of the stirrup. The solid tree allowed for effective use of the stirrup. Other precautions are done with stirrup design itself.