World War II could have been avoided. It was an unnecessary war that cost 60-70 million deaths. It laid important cities, Dresden, Hamburg, Leningrad, Cologne, Stalingrad, Berlin, Tokyo, Hiroshima, Nagasaki, and more in ruins. The war broke out; actually Hitler attacked Poland, a mere 21 years after World War I ended. Men who had been infantrymen in their twenties for World War I were in their forties in 1939. Every one in Europe remembered the four year agony in the trenches and no one wanted to do that again. No conceivable political objective was worth doing another four years of trench warfare. Everyone in Europe agreed on this, except for one man, Adolph Hitler. Somehow, Hitler had taken control of a great power and used that control to start World War II.
Using hindsight, it is clear that we could have eliminated Hitler and spared the world six years of agony and death. Hitler would have had to be taken out sometime between 1932 and 1938 to do any good. We (France, Britain and the United States) could have marched our armies into Germany, over thrown Hitler and put him on trial for war crimes, violations of the treaty of Versailles. Or shot him “trying to escape”. That would have required French and British governments with some backbone, which was lacking in those years, plus solid support from the United States, to the point of dispatching at least one American division of troops to back up the Europeans and serve as a token of American support. Unfortunately the United States was sunk deep into isolationism, and then the Depression and did not want to exert itself or take any risks. It took the unprovoked attack on Pearl Harbor to snap us out of it.
Or, we could have sent one or two good men with rifles into Germany and had them shoot Hitler at one of those massive Nazi rallies. We had some guys who could have done it. The name Alvin York, (Sergeant York) a good southern boy from Tennessee, comes to mind. And there were certainly other Americans who were just as good shots.
We need to keep this history in mind as we go forward into a dangerous world.