Carter: Sir, did I ever told you about my father’s advice to me when I left from south?
Sergeant: Hmm, I don’t think so.
Carter: When I told him that I would join the Union Army of the north, he said that no matter what happened, I’d must always be sure to do what I think is my duty.
Sergeant: Wow, that’s a good advice.
Carter: I know it, Sir.
Sergeant: Then, what’s the matter?
Carter: You sent me to guard today. You commanded me to make sure that no enemy soldiers from south spied on.
Sergeant: Yes, that’s right.
Carter: So, it’s my duty, Sir.
Sergeant: Of course it is. I heard a shotgun a while ago. Did you fire?
Carter: Yes, Sir.
Sergeant: At what?
Carter: A horse.
Sergeant: Was there anybody on the horse?
Carter: My father, Sir.