Squirrel-dog Chase
How did they do that? Can you train a squirrel to run where you want it to? And get the dog to chase it? I think this must have been the hardest part of the movie to film. No GCI here it was 1944. Possibly the dog and squirrel were filmed at different times in some sort of traveling matt shot but I don't know.
"It costs extra to carve 'Schmuck' on a tombstone, but you would definitely be worth it."