Assault on a Queen

Duke Ellington, the film's composer, had to leave scoring the film to go on tour. Van Cleave and Frank Comstock were brought in not only to orchestrate the film but to finish the score and arrange the material. In the end, only five of Ellington's cues survived, with the rest being from the arrangers. Sadly, the master tapes to the score have been lost to time and the full extent of what Ellington recorded that was not in the film will never be heard. In June 2016 Dragon's Domain Records released the score as heard in the film, but from monaural music stems, since the aforementioned master tapes no longer exist.

When the submarine is beneath the Queen Mary and the liner starts her engines and propellers, a technician's hand is clearly visible shaking the stern of the U-Boat model back and forth in the prop wake. This may not be apparent on the pan/scan version, but is obvious on the new Blu-Ray hi-def transfer.