In 1861, Francis Moore appeared to be a perfectly ordinary, twenty-three year old man: a carriage maker in the bustling Mississippi River town of Quincy, Illinois. And there he might well have lived out his life in unadventurous comfort. But then the Civil War burst out, and Moore, along with most of his friends, like young men North and South, rushed to enlist in the army. His cavalry regiment soon set off for what proved to be four years of warfare,...