Film debut of Lance Percival.
In 1965, at the height of the James Bond craze, American-International Pictures released this movie in the US as "Operation Snafu". The title, as well as the advertising campaign, downplayed the comedic aspects of the film and, by highlighting Sean Connery's appearance (he was second-billed), suggested it was an espionage thriller in the tradition of the 007 films that were then breaking box-office records worldwide.