The Kubelwagen belonging to the Wehrmacht at the checkpoint has a license plate missing the first two letters WH.
At the checkpoint, Lieutenant Werner has the eagle on his cap askew, which would not have been tolerated.
The film is set in 1942 before the demarcation line was removed in November. Members of the Milice arrest the parents and conduct brutal interrogations which was impossible at this time as the Milice was created in 1943.
At the beginning, when Blanche goes to the café, many TV antennas from the 80's can be seen on roofs.