The attack on fort Sumter is the unofficial start to the war, but the conflict began far before with sectional tension coming to a head over slavery resulting in the south's secession. The first official battle was the one fought at bull run
First person point of view, and an unreliable narrator. Having it like that means he can go into the depth of the phycology of the character
Answer:
Are you speaking about the actors or the audience? If you are talking about the actors- never! It would be highly irresponsible to fall asleep at your job. If you are talking about the audience- I suppose you can fall asleep whenever, but it would be disrespectful to the actors (unless you are watching the film version).