Continuity mistake: When the Austrian Emperor and Gustav's father die on the same day Gustav puts their photographs on a sideboard. The close-up of Gustav's father's picture shows a white background, in contrast to all wide shots.
Continuity mistake: When the General tells Gustav to remove all Jews from his team Gustav runs to the toilet and vomits. Altough he aims into the toilet bowl you see a close-up of a huge load falling on his boots.
Continuity mistake: Three actresses play Valerie Sonnenschein/Sors at three different ages. As a young woman she has a distinct birthmark on her upper lip which she doesn't have as a child or as an old woman.