Does anyone know whether there is a misprint in the clue for (21), which reads "Film about a famous festive peace-fire"? Should the last word be "cease-fire"?
Thanks for answering Pea Pod, and the film that you mention is the one that I have as my answer. The film is about the Allied and German armies in World War 1 trenches "fraternising" on Christmas Day. Hence my query about "cease-fire" instead of "peace-fire".