2) Because the Duke is a sick sick person? Or because you need adults to stay home and do the productive things like grow the food. Kids are..expendable.
Who knows how much longer this war will go on for. Gotta have some adults back home to keep on reproducing so they they have a fresh supply of “soldiers” to send out into the field if this thing goes for 14 more years.
4)Because PP is HE. You have to listen to the quote again.
Random Lost One: “Will we ever find the boy HE is looking for?”
Felix: “It may take some time, but PETER PAN always gets what he wants.”
He is the antecedent of PP, they are grammatically linked.