Little bit of trivia...Sickles killed the son of Francis Scott Key, when he found him having an affair with his wife. Sickles then became the first person in the United States to succesfully employ a defense of temporary insanity.
More trivia: Sickles received a General’s commission in the Union army because of his political connections, and commanded Third Corps at Gettysburg. Sickles disobeyed his orders to defend Little Round Top and projected his troops out into the Wheat Field, where they suffered serious casualties. Sickles was one of them, losing a leg. During Grant’s reorganization of the Army of the Potomac, Third Corps was eliminated, it’s components being distributed among other units.