The biggest issue I was always taught was money. The decision-makers at the end of WW1 made it darn near impossible for the countries to afford reparations, so they nearly bankrupted them. Hitler made a lot of sense (who knows why) to a lot of people and was able to convince enough that he knew how to make Germany thrive and be prosperous and strong. Too bad no one realized this was at the cost of so many lives.
In the final analysis, it was used to shorten the war and thereby save lives.
That was one of the reasons for Germany's loss of WW 2.
Audie Murphy was the most-decorated war hero of World War 2, with Matt Urban coming in behind him in second place. Murphy received 29 awards while Urban received 28.
After World War 2
world war 2