Complex sentence: Archdale marries Miss Todd (known to all as "Toddy", played by Rosamund John) the popular manageress of the hotel, and they have a son, Peter, but a year later, Archdale is shot down and killed over France.
Split into simpler sentences: Archdale marries Miss Todd (known to all as Toddy, played by Rosamund John) the popular manageress of the hotel, and they have a son, Peter. A year later, Archdale is shot down and killed over France.