The Big Sandy Expedition was organized by a Union general who was also a United States what?
William &quot;Bull&quot; Nelson William "Bull" Nelson (September 27, 1824 – September 29, 1862) was a United States naval officer who became a Union general in the Civil War.
John Aaron Rawlins John Aaron Rawlins (February 13, 1831 September 6, 1869) was a general officer in the Union Army during the American Civil War and a cabinet officer in the Grant administration. A longtime confidant of Ulysses S. Grant, Rawlins served on Grant's staff throughout the war, rising to the rank of brevet major general, and was Grant's chief defender against allegations of insobriety. He was appointed Secretary of War when Grant was elected President of the United States.