Sumter.
Nicknamed "Little Napoleon" at West Point, he was wounded at Chapultepec in the Mexican War, and served as West Point's superintendent for six days in early 1861 before he resigned to join the Confederate Army.  After taking an unexcused sick leave in 1862, he later defended Charleston against Union naval and ground forces, and defeated Benjamin Butler at Drewry's Bluff south of Richmond.  At Shiloh, he assumed command after Albert Sidney Johnston was killed.  FTP, name this Confederate general who also commanded the Rebels at the first battle of Manassas and the bombardment of Ft. Sumter.
Nicknamed "Little Napoleon" at West Point, he was wounded at Chapultepec in the Mexican War, and served as West Point's superintendent for six days in early 1861 before he resigned to join the Confederate Army.  
Pierre Gustave Toutant Beauregard