Also, at that time the Polish Navy created a Bureau of Living Torpedoes, which suggests that the idea was treated seriously. According to one of the volunteers, Marian Kamiński from Poznań, who saw the movie, Navy officers told him to return to Gdynia on October 12, 1939, for a two-month training course. The course never started — as Germany attacked Poland on September 1, 1939 — but some of the volunteers had by then been drafted into another special ops unit for sabotage and operations behind enemy lines.