On May 12, 1945, the 6th Marine Division was nearing Naha, capital of Okinawa. To the division's front lay a low, loaf-shaped hill. It looked no different from other hills seized with relative ease over the past few days. 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...