For Q- I would suggest William Quantrill, one of the most infamous confederate guerrillas of the war
A couple other factual errors- while Lee was in fact a very respected general, he was not in charge of the whole confederate army, only the army of northern Virginia. So to call him the "main" general is technically wrong.
Also, George Pickett was didn't command the charge by himself: he was one of three generals leading the charge. Everyone forgets the other two because during the American civil war "history is written by the winners" became "history is written by the Virginians" and they emphasized anyone who came from Virginia, including Pickett.
Finally, you should correct the Antietam hint to say bloodiest "single" day battle, because by casualties, Gettysburg and chickamauga had more casualties.