Thomas Jonathan "Stonewall" Jackson (January 21, 1824 – May 10, 1863) served as a Confederate general (1861–1863) during the American Civil War, and became one of the best-known Confederate commanders, after Robert E. Lee. He played a prominent role in nearly all military engagements in the Eastern Theater of the war until his death, and had a key part in winning many significant battles. Military historians regard him as one of the most gifted tactical commanders in U.S. history. His tactics are still studied.