General Daniel Sickles' amputated leg bones with similar cannonball to the one that hit him in 1863. Daniel Sickles' leg was removed after he was struck by a cannonball at the Battle of Gettysburg.
Prior to the Civil War, Gen. Sickles had murdered the son of Francis Scott Key (who was having an affair with his young wife), and had been put on trial, but had been acquitted.
When he was struck during the war, he was, in effect, removed from his post, but he resented that. After being removed, he ran a campaign against both Gen. George Meade and Ulysses S. Grant, which attacked them both for not allowing him back to the field.
After the war, he served as ambassador to Spain, and survived until 1914.