Q: What do you call a French man killed defending his country? 
A: I don't know either, its never happened!
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Q: How do you confuse a French Soldier?  
A: Give him a rifle and ask him to shoot it.
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Q: What's the motto of the US Marine Corps?  
A: Semper Fi (Always Faithful) 
Q: What's the motto of the French Army?  
A: Stop, drop, and run!
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Q: Why does every army (except the U.S., England and Israel) have to have a French flag? 
A: In case they want to surrender!
Well, then, there ya have it, eh?  Well, except for this part, maybe:
Mark Twain wrote:"France has neither winter nor summer nor morals. Apart from these drawbacks it is a fine country. France has usually been governed by prostitutes."