The War to End All Wars. World War II involved the majority of the world's nations between 1930 and 1945 and was one of the most destructive conflicts in human history. The war altered the entire world. This brief, but exciting and informative course explains the causes of the war and the rise of Axis leaders Adolf Hitler, Benito Mussolini, and the German War Machine. We also look at Ally leaders Winston Churchill and Franklin Roosevelt. We review Germany's march across Europe and the Pacific and America's entry into the War. Finally we explore how the War ended and the terrible losses the world suffered.