It's Not Shemp Howard
It's not Shemp Howard masquerading as Hitler in "To Be Or Not To Be". It's Tom Dugan, as Bronski, one of the featured players. Read the credits for Heaven's Sake!
Mel Brook's remake has some funny stuff in it; I've always gotten a kick out of the "SCHULTZ" routine, regardless of who does it.
Carole Lombard was one of the real beauties of the screen back in the thirties. Her death was a real tragedy.