General Beauregard Courtney sat in his staff car atop a slight rise and watched the slow, meshing movement of his troops on the plains south of Tullahoma, Tennessee. Clouds of dust drifted westward in the lazy summer air, and the dull boom of enemy artillery sounded from the north. "You damn black coon," he said without rancor, "you know you're costing me a night's sleep?" The Negro courier stood beside his motorcycle and his teeth flashed white in his good-natured face. The dust of the road fil