The Combahee River raid
Colonel James Montgomery took three gunboats up the Combahee with the 2nd South Carolina Volunteers, guided by intelligence gathered by Harriet Tubman. They burned the rice mills and plantations and carried off somewhere around 700 enslaved people in a single night. It is the only Civil War military operation known to have been planned with a woman’s direct hand in it.
Official Records, Series I, Vol. 14