The Battle of Fort Donelson was the first major victory for Federal forces and the first decisive battle in the vital area from the Appalachians to the Mississippi. It gave the Federals control of both the Tennessee and Cumberland rivers; led directly to the fall of the first Confederate capital at Nashville and the Battle of Shiloh, and was the beginning of the fame and/or infamy of several Civil War generals, including U.S. Grant, N. B Forrest, Gedion Pillow and John B. Floyd. It also resulted in the first surrender of an army by a Confederate general, and the largest capture of enemy troops in American history, up to that time.