If you’re sick of seeing nothing but superhero films hit theaters, imagine going to the multiplex in the ’40s and thinking, “Great, not another damn war movie.” War dramas were pumped out by the dozens, with the occasional comedy or musical thrown in to lighten the mood. When World War II ended, new angles emerged. Servicemen readjusted to life at home, war criminals were hunted down… every conceivable story was told. The deluge continued into the ’60s, but as the war started fading into history, a new subgenre became popular: mad Nazi schemes. Nazis and mad science go together like...