Captains of the Clouds is a 1942 American war film directed by Michael Curtiz and starring James Cagney. first feature-length Hollywood production filmed entirely in Canada film stars James Cagney and Dennis Morgan as Canadian pilots who do their part in the Second World War, The title of the film came from a phrase used by Billy Bishop, the First World War fighter ace, who played himself in the film.The film ends with an epilogue chronicling the contributions of the Royal Canadian Air Force (RCAF) to the making of the film. Here are 8 lobby or front of house cards, which served like posters although smaller. Captains of the Clouds became official song of the Royal Canadian Air Force according to sheet music cover.