Here is a little more on the history of WWII. WWI and WWII are the bookends for the complete destruction of the British Empire at the hands of the USA. It was self inflicted and Churchill did it all by himself. What had truly entered the world stage with Marleborough, left the world stage with Churchill, his descendent.
What did not happen was a truly organized conspiracy to eliminate the Jewish race though plenty died and those concentration camps were real enough. Yet that six million story has been used to browbeat folks everywhere. Certainly hundreds of thousands did die as did millions of soldiers. Those got counted until it was inconvenient.
It was all a true killing field and ultimately in extremis as well.
It is convenient to portray Hitler as evil incarnate in order to excuse all other crimes. Doubt leaks in when you actually read the record. Today the historian Irving has been publicly slandered for merely asking the right questions from the documents available. Even now we can not get an honest debate.
All of this set the stage for the american economic dispensation for the globe itself in competion with a surging global Communism. Maybe it was all necessary. Yet it is wise to remneber that it all need not have been the way it became.