Trivia for
The Mouse That Roared (1959) More at IMDbPro »

• The Marseilles and New York harbor sequences were filmed in Southampton, UK. The presence of the Queen Elizabeth ocean liner there was a lucky coincidence.
  
  
• The New York invasion sequence was filmed in Manhattan on a Sunday morning, accounting for the city's empty streets.
  
  
• Peter Sellers made this film in part as a means of emulating his hero, Alec Guinness, by playing multiple roles in one movie.
  
  
• Among the musical quotations used in the film were excerpts from Felix Mendelssohn's "Hebrides Overture" and a number of American marches, including a number of passages from "Our Director".
  
  

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