The only time the French got their butts beat and surrendered without much of a real
fight was the Franco-Prussian War. This was due to poor management of the war by Emperor Napoleon III. The Battle of Sedan ended with his capture and the decimation of whole French Army. The French Congress then met and declared the country a Republic and then surrendered to Germany after a little bit of sporadic fighting.
Not long after this William of Prussia was crowned Emperor of Germany and the French ceded vital territory on their side of the Rhine.
Other than that the French usually fought long and hard against invaders.
But then again it was just a French joke...
As for a French Mas... watch out for slam fire.