Complex sentence: He appeared as a young soldier in the World War II film "Closing the Ring" directed by Richard Attenborough, and will be starring opposite Stephen Fry and Udo Kier in "House of Boys".
Split into simpler sentences: He appeared as a young soldier in the World War II film "Closing the Ring" directed by Richard Attenborough. He is starring opposite Stephen Fry and Udo Kier in "House of Boys".