Hostility on the Set: A very, very mild version — apparently, Jack Benny and Carole Lombard, otherwise great friends, apparently got into bickering over who was going to get top billing. Benny maintained it should be him as he was essentially the film's protagonist, while Lombard argued that her name first would make financing the film and getting publicity easier note while Benny was the nation's top radio star, he was to that point at or below B-List level when it came to movies, while Lombard was at the top of her fame... a fame that would tragically be cut short after filming. In the end, the two compromised and Benny let Lombard have top billing when it was pointed out that Benny got the best lines!
Jews Playing Nazis: Josef (a Polish gentile, though played by Jewish actor Jack Benny)'s plan involves disguising himself and other members of the Polish resistance disguise themselves as Nazis.
Acclaimed Flop: Critics praised the film for its production values and ensemble cast, but audiences despised it at the time of release. Budgeted at $9 million (excluding marketing, manufacturing, and shipping costs), it only grossed $13 million at the end of its theatrical run.