Former slave Rachel Mannheim and former slave owner Adelaide Kaltenbach fought a war to be sisters. Now that the Civil War is over, a new fight is just beginning. Adelaide, married to a Georgia cotton planter, never dreamed that she would side with the Union or the Freedmen's Bureau. In Cass County, just after the Civil War, she's done both. Her school for the county's black children has earned her the warm appreciation of Captain Lewis Hart, Union...