- Ealing Studios
- (An Ealing Studios Production)
- General Film Distributors (GFD)
- (United Kingdom, 1948)(General Film Distributors Ltd., released through, theatrical)
- Eagle-Lion Film
- (Sweden, 1948)(theatrical)
- Eagle-Lion Films
- (United States, 1949)(theatrical)
- Kommunenes Filmcentral (KF)
- (Norway, 1949)(theatrical)
- Unity Television
- (United States, 1952)(Unity Television Corp., TV)
- Belgian Ministry of National Defence
- (the Belgian Ministry of National Defence, the producers gratefully acknowledge the co-operation of)
- Belgian Ministry of the Interior
- (the Belgian Ministry of the Interior, the producers gratefully acknowledge the co-operation of)
- Société Nationale des Chemins de Fer Belges
- (the Société Nationale des Chemins de Fer Belges, the producers gratefully acknowledge the co-operation of)
- The Air Ministry
- (the Air Ministry, the producers gratefully acknowledge the co-operation of)
- The Philharmonia Orchestra
- (The Philharmonia Orchestra, music played by)
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