As clouds flitted across the moonlit sky on the night of June 2, 1863, three gunboats snaked up the Combahee River in South Carolina’s Lowcountry region. The Civil War was raging and the vessels were filled with Union troops, many of them from the 2nd South Carolina Coloured Infantry, on a mission to strike Confederate plantations. There to guide them on this perilous expedition was a black woman already famed for her bold excursions into the hostile territory: Harriet Tubman. From Underground Railroad to Union Spy Born into slavery, Tubman - the...