An impeccably researched, character-driven narrative history recounting the fascinating late-Reconstruction Era mission of General Philip Sheridan, a Union hero dispatched to the South 10 years after the Civil War to protect the rights of newly freed black men, who were under siege by violent paramilitary groups like the White league intent on erasing their postwar gains. On New Year's Eve 1874, Sheridan made a splash on his arrival in New...