Killing Ground on Okinawa - James H. Hallas - Bog

But this hill, soon to be dubbed, Sugar Loaf, was very different indeed. Part of a complex of three hills, Sugar Loaf formed the western anchor of General Mitsuru Ushijima's Shuri Line, which stretched from coast to coast across the island. Sugar Loaf was critical to the defense of that line, preventing U.S. forces from turning the Japanese flank.