According to Eric Goldberg's commentary on the DVD, Bugs asks the Sherrif of Nottingham if he is a Veteran because many WW2 veterans had trouble obtaining housing loans.
Little John is a caricature of Chuck Jones. (He was somewhat fat during this period.)
This line: Bugs Bunny: Conk Arise, Duke of Brittingham.is an in-joke to the bar Briitingham's across the street from the Warner Brothers cartoon studio. According to writer Lloyd Turner in an interview with Mike Barrier fellow cartoon writer Tedd Pierce was such a frequent customer Turner said that he "lived there."