As most of the world remembers November 11, the ceremonies on European battlefields seem to lack a certain participant, a major power belligerent ... one that is off on its lonesome doing its own multipurpose, cover-all the bases thing stateside.
Maybe politicians, looking at the record of that day, decided it better that Americans not remember the armistice:
"I met several subordinate officers who were wounded on November 11, some seriously. Without exception, they construed the orders which forced them to make an attack after the armistice as murder and not war." - Sen. Royal Johnson to General Hunter Liggett