That is true.
So probably all the pomp, dressing up and pride are not really to do with "it never happening again" but a setup to ensure the next generation feel obliged to make it happen again if they feel the need arises.
Else why would those who "sacrificed themselves" need any more remembering than those who died breaking their backs in the fields, mills and factories to support their children (also our ancestors) or, say, in childbirth or who otherwise died, helping our families survive? Or, taking me back to where I started, to those who lived happily and prosperously, dying peacefully in bed, leaving us a world still worth living in?
If Hitler had won, we would probably be remembering the brave Nazis saving us from the murderous fanatics who believed the best way to organize things was to give power for short periods to third rate managers - chosen from a list on a piece of paper.