The same shot of a rabbit being missed once and then hit by a second bullet is used twice within a minute (the second cut is slightly zoomed in).
When Lucien walks in on Horn and his daughter while she's playing piano, the position of Holger Löwenadler's head changes abruptly between shots.
At the end, the SS soldier is driving a Kubelwagen with a license plate beginning with WH, which means Wehrmacht. It should begin with SS.
When Lucien goes back to the hotel early morning, modern red no parking signs are visible on garage doors.
When Lucien arrives in town by bicycle at the beginning, white stripes delimiting parking spots can be seen.
Near the end, a huge billboard is concealed by wooden planks but the sides are visible.