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The Mouse That Roared (1959)

Approved | | Comedy | November 1959 (USA)
2:30 | Trailer

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An impoverished backward nation declares a war on the United States of America, hoping to lose, but things don't go according to plan.



(screenplay) (as Roger Macdougall), (screenplay) | 1 more credit »



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Complete credited cast:
MacDonald Parke ...
General Snippet (as Macdonald Parke)
Austin Willis ...
Monte Landis ...
Cobbley (as Monty Landis)
Air Raid Warden
BBC Announcer
Harold Kasket ...


The Duchy of Grand Fenwick, the smallest country in the world, is nestled in the French Alps. Being as isolated as it is, its life is a throwback to olden days. It is a happy, peace-loving country. Its economy solely rests on export of its only wine, Pinot Grand Fenwick, to the US. When a California vintner starts producing and selling a knock-off of the Pinot Grand Fenwick at a lower price, the Grand Fenwick economy goes into a crisis situation, the country on the brink of bankruptcy. Three protests to the US go largely unanswered. Grand Fenwick's Prime Minister, Rupert of Mountjoy, believes the solution is to declare war on the US, and promptly lose the war in less than a day with no casualties on either side, after which the US, which it has historically done, will provide vast financial aide to rebuild the country. Grand Fenwick's monarch, the Grand Duchess Gloriana XII, ultimately supports this concept. The plan is to send an official declaration of war to the US, have a small ... Written by Huggo

Plot Summary | Plot Synopsis


The Hilarious Story of How the Duchy of Grand Fenwick Waged War on the U.S. - and Won See more »




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Release Date:

November 1959 (USA)  »

Also Known As:

Die Maus, die brüllte  »


Box Office


$450,000 (estimated)
See more on IMDbPro »

Company Credits

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Technical Specs


Sound Mix:

(Westrex Recording System)


(Eastman Color)

Aspect Ratio:

1.85 : 1
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Did You Know?


The palace band includes a double flageolet, a 19th century wind instrument. See more »


During the Institute for Physics scene, Professor Kokintz addresses Tully as both "Grand Marshall" and "Mr. Constable", but nowhere in the preceding dialogue is Tully introduced as such. Prof. Kokintz couldn't have known his two titles. See more »


Tulley Bascombe: Remember, men. There is nothing wrong with surrendering to overwhelming powers, as long as it is done in a military manner.
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Crazy Credits

An animated mouse roars like a lion as the title appears onscreen. See more »


Referenced in Starship Troopers 3: Marauder (2008) See more »


La Marseillaise
(1792) (uncredited)
Written by Claude Joseph Rouget de Lisle
In trhe score in France
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Frequently Asked Questions

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User Reviews

One of the classic subtle movies
5 June 2003 | by See all my reviews

This is a delightful movie, my wife and I have enjoyed this one over the years. And each year it is better. The message is blunt, declare war on the U.S. and lose. However, it is the subtle background which is so good. One must just sit back and enjoy the movie and Peter Sellers. It is not often one gets to just watch a master of the arts at work. There is nothing heavy duty slapstick. Just a fun time.

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