First off-road drive in the 2020 LR Defender: https://www.auto-motor-und-sport.de/fahrbericht/erster-check-mitfahrt-land-rover-defender-neu-2020/
Maybe these guys are reenacting the drive through the Ardenne on unpaved roads, just like it was Dec. of '44. They only really drive off-road when they're invading some other country.