In 1936, Hitler tried to remilitarize the Rhineland: one of the local French commanders (who's name escapes me at the moment), acting without orders, attacked the incoming German troops, forcing the hands of both governments. The subsequent war saw the French completely thrash the unprepared, underarmed German army, and the collapse of the Nazi government.
But most of the French politicians at the time didn't feel like they were ready for war: Hitler definetly wasn't, as he still tried to beg off until he realized the French weren't going to stop. So if the army didn't take their own iniative, and Germany reoccupies the Rhineland, will there be another war? What would an extended Nazi government and a French army lacking confidence mean for Europe for the rest of the 30's and 40's?