Answer:
Health and Nutrition in the Western Hemisphere
James Garfield was the Rosecrans's chief of staff who later became a president of the United States. James A. Garfield served as chief of staff under Major General William S. Rosecrans, the commander of the Army of the Cumberland. Garfield resigned in<span> December 1863 from the Army to take his seat in the U.S. House of Representatives.</span>
<span>Killed thousands of Indians.</span>