Might I say that we should never forget the war.
It highlights many important points that we can learn from. Whether it be, don't be too harsh in peace (1919), never vote a madman into power (1933), and never allow a hostile state to become too powerful (1933-9).
I do disagree with the whole Basil Fawlty way of expressing the war.
I do try to make a point (and often fail) that WW2 was against the Nazis and not the Germans. How willingly the German people accepted the Nazis, and therefore helped cause war, is up to the individual to decide.
Not forgetting that American and British banks helped finance the fledgling Nazi State.
The fear of Communism drove the capitalists into the arms of the extremists.