| Original title | They were expendable |
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| Danish title | Operation Helvede |
| Leikstjórn | John Ford |
| Screenplay | Frank Wead |
| Based on | Efter en roman af William L. White. |
| Director of Photography | Joseph H. August |
| Editor | Douglass Biggs, Frank E. Hull |
| Composer | Herbert Stothart |
| Appearance | Robert Montgomery, John Wayne, Donna Reed |
| Land | USA |
| Domestic distribution | Metro-Goldwyn-Mayer |
| Technical info | 35 mm, 1,37:1 Academy, Sort-hvid, Tone |
| Danish theatrical release | 15.07.1966 |
| Cinemas | Rønne |
| TV release | 14.04.1990, TV 2 |
Companies |
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| Production company | Metro-Goldwyn-Mayer |
| Domestic distribution | Metro-Goldwyn-Mayer |
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Instruktion |
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| Instruktion | John Ford |
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Manus |
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| Manus | Frank Wead |
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Produktion |
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| Produktion | John Ford |
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Foto |
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| Foto | Joseph H. August |
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Klip |
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| Klip | Douglass Biggs |
| Klip | Frank E. Hull |
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Musik |
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| Musik | Herbert Stothart |
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Medvirkende |
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| Medvirkende | Robert Montgomery |
| Medvirkende | John Wayne |
| Medvirkende | Donna Reed |
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