Mark Sheppard, the director and actor who portrays the younger Captain Nemo, is the son of the actor who portrays Captain Nemo, William Morgan Sheppard.
When Herbert gets fresh water for Abby he gets the water and is returing you see a wrist watch on his left arm as he walks back toward the door.
Good: The Confederate that joined the group was called a Sergeant several times yet he was wearing an Officers Frock Coat