From October 1918 the germans were trying to cut a deal, but this didn't happen till 11/11/1918 in Compriegne, France in the famous railway carriage, used by Hitler in W.W.2. for the surrender of France!
France wanted Germany to pay for the 1914-18 war, and there is Harry Potter symbolism here....the Feast of Martin of Tours is on 11th November, it happens to be the patron Saint of France and Soldiers, please scroll to right under Patronage:-
Martin of Tours - Wikipedia, the free encyclopedia
All the Harry Potter stuff didn't work, we had another war 20 years after!!