The Pinnacle was the name given to a 30 foot spire, atop a 450 foot ridge of coral approximately 1,000 yards southwest of Arakachi, Okinawa. Heavily fortified by the Japanese 62d Division, this outpost to Japan's main defenses at Shuri held up the U.S. 7th Division on 5–6 April 1945 with accurate and well-concealed machine gun, mortar and artillery fire.