For this to occur, I think you would need some periods of peace interspersed between periods of total war. You would also need to have some sort of dynamic in which Hitler overshadows the other great personalities of the era: Churchill, Stalin and Roosevelt.
My scenario: war goes the way it did OTL until the fall of France. The UK then makes a temporary peace for some reason, perhaps due to a disaster at Dunkirk combined with an devastating B.O.B. Hitler then declares war on the USSR after an interlude, makes slightly more progress than OTL. Germany then declares war of the US and UK after Pearl Harbor, as in OTL. German defeat follows, however due to the period of peace between wars, Japan is forced out of the war on schedule, but Germany holds out another six months or so. By an interesting coincidence, the world learns of Hitler's death on the same day as the German army surrenders.
In such a scenario, Hitler could be more easily portrayed as the instigator of the entire series of wars, much as Napoleon was. In addition, the wars would begin and end with actions taken by Hitler.