Thomas Jonathan "Stonewall" Jackson was a Confederate general during the American Civil War. He earned the nickname "Stonewall" for his steadfastness and bravery in battle. Jackson is known for his tactical brilliance and aggressive leadership style, which earned him a reputation as one of the most effective commanders of the Confederate Army. His military strategies and maneuvers had a significant impact on the outcome of several key battles during the Civil War. Jackson's legacy as a skilled and daring military leader continues to be studied and admired by historians and military strategists.