5 foxes were taking part in the filming.
Simon Morzé lived for 4 months with a Pinzgauer family and joined them to work and church to learn the regions traditions and dialect.
Adriane Gradziel spent a week alone in the empty cottage house to prepare for her role as Marie.
An original Zündapp motorcycle that survived the Operation Barbarossa was destroyed during the filming.
An alternative story-line was filmed but cut from the final version which involved Franz getting into a fistfight with Dillinger and included more motorcycle action with them both riding side-by-side through combat.