I think after the first Franco- Prussian War. France lost and were humiliated.
1871: France got a smack on the head.
Consequences: 5.000.000 Goldfranc paid to Germany, Germany united, France became mad with revenge-wishes.
1918: Germany capitulate at the end of WW I.
Consequences: France creates a peace treaty which neary strangles Germany and so they help the Fascists. East-France totally destroyed by the war.
1945: End of WW II.
Consequences:
Germany:40 years of dividing Garmany into two states, but ascension to 3rd strongest economic power.
France: Loosing of nearly all colonies. Descending into a middle power in economy, importance and force.
That's really a nice history......