| Cast list | | Lewis Collins | as | Major Colby | | Lee Van Cleef | as | Col. Mazzarini | | Donald Pleasence | as | Henry Carlson | | Manfred Lehmann | as | Mason / Hiccock | | Brett Halsey | as | McPherson | | Chat Silayan | as | Ling | | Hans Leutenegger | as | Gutierrez | | Christian Brückner | as | Frank Williams | | Frank Glaubrecht | as | Lennox | | Thomas Danneberg | as | Gustafson | | Anita Lochner | as | Mrs. Mason | | Wolfgang Kühne | as | Krüger | | Paul Muller | as | Carbalo | | Bobby Rhodes | as | Kongo Klaus | | Romano Puppo | as | Angelo |
| | Crew list: | | Antonio Margheriti (Director) | | Tito Carpi (Writer) | | Arne Elsholtz (Writer) |
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