It is a truth, universally acknowledged, that Hollywood will never, absolutely ever, run out of new WWII stories to tell. Even when Hollywood does run out, they'll just keep inventing more, since this is apparently the military conflict that viewers never get tired of. And now -- atop a pile of content that includes everything from Band of Brothers on HBO to Greyhound on Apple TV Plus -- we can add Operation Mincemeat , a spy story from Netflix that the streamer released on Wednesday. This movie is stacked with high-profile British acting talent, starting with Colin Firth and Matthew...