It’s early afternoon, May 1, 1955 — and Donald McWilliams finds himself with other British soldiers in Ndyeia Gorge in central Kenya. At their feet a Mau Mau fighter lies dying, mortally wounded by their gunfire. Above them all, the vast skies of the Rift Valley. McWilliams is hardly out of his teens — a child of wartime London, stationed to Kenya for his national service