- Tigon British Film Productions
- (Tigon British, production)
- American International Pictures (AIP)
- (American International, production)
- Flair Communications
- (World-wide, 2022)(Copyright holder)
- Screenbound International Pictures
- (World-wide, 2017)(World Sales Agent)
- Tigon Pictures
- (United Kingdom, 1968)(theatrical)
- American International Pictures (AIP)
- (United States, 1968)(theatrical)
- Alpha (II)
- (West Germany, 1969)(theatrical)
- Fram Film
- (Norway, 1968)(theatrical)
- JO-EL
- (Mexico, 1968)(theatrical)
- Ministry of Defence
- (The Ministry of Defence {Army Department}, for their kind co-operation in the making of this film, the producers wish to thank the following)
- The Headquarters Staff Stanford Practical Training Area
- (for their kind co-operation in the making of this film, the producers wish to thank the following)
- The Suffolk and Cambridgeshire Regiment
- (for their kind co-operation in the making of this film, the producers wish to thank the following)
- The Lavenham Parish Council
- (for their kind co-operation in the making of this film, the producers wish to thank the following)
- De Wolfe Music
- (music publisher, uncredited)
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