While the premise for the show might have been the SAS, the show itself modeled parts of the movie "The Desert Rats" (1953). The 30-minute time constraint limited the show's storyline to a formulaic plot: a regular contest between the characters Troy, the American, and Dietrich, the German, mirroring "cowboys" and "Indians". The show first aired on 12 September 1966; its final season began 16 September 1967. Despite its many historical inconsistencies, the show achieved successful ratings at a time when military shows were in decline because of public disaffection with the Vietnam War