Answer:
Thomas "Stonewall" Jackson was one of General Lee’s most trusted generals; he was accidentally shot by his own troops at the Battle of Chancellorsville.
Explanation:
When the Civil War arrived, Thomas Jackson was a colonel of the Virginia militia, and was stationed at Harpers Ferry until J.E. Johnston replaced him.
Jackson excelled in the first battle of Bull Run in 1861 (where he received his famous nickname Stonewall), after which he was promoted to general on October 7 of that same year and was given command of the Valley District, with headquarters in Winchester (Virginia), where he defeated Union troops, far superior to his own. He also had a prominent role in the second battle of Bull Run, Antietam and Fredericksburg.
On May 2, 1863, during the victorious Battle of Chancellorsville, Jackson went on a night reconnaissance mission and was shot by his own men, who because of the darkness did not recognize him.