It’s interesting that nobody has mentioned Grierson, who led the most daring cavalry raid of the war, all the way across Mississippi.
Another fascinating figure was Grimes Davis, the Mississippi born Union soldier who led his troopers out of Harpers Ferry before Stonewall could scoop them up. But he was killed at Brandy Station.
After the war, Grierson organized and commanded the 10th Cavalry Regiment, the Buffalo Soldiers, from 1866-88. His fair treatment of his black troopers and his respect and honesty with the Native American tribes made him a number of enemies among his fellow officers (especially his superior, Phil Sheridan) but garnered him the devotion of his troopers and the admiration and respect of the Indian chiefs and elders.