The Forgotten Battle

Filming the battle scenes in the Netherlands turned out to be near-impossible due to all kinds of environmental issues (certain wild animal populations that couldn't be disturbed, no permission for explosive effects, etc.). Another problem was that modern windmills had been placed around the original site of the titular battle, and money spent on digitally removing them would be better spent on adding planes or destroyed villages. The problem was solved by going to Lithuania, which offers tax benefits for movie productions. A piece of unused farmland was rented there from a farmer, who told production that they could do with it as they pleased. An entire dam was built there specifically for the battle scene.

When the Friedrich Fischer introduces himself to Marinus in the hospital he states his rank is Oberleutnant ((first) Lieutenant) while wearing an SS uniform with the shoulder patches of the rank SS-Scharführer (NCO) and arm patch of the rank SS-Sturmmann (Enlisted). The rank of Oberleutnant only existed within the Heer (Army) and the SS equivalent would be SS-Obersturmführer.

Referenced in Heinz 1945 (2021)