Feldm. OB Scheinstellung is a military bunker located in northern France, near the Belgian border. The designation 'Feldm. OB' likely refers to a Feldmarschall (Field Marshal) Oberbefehlshaber (Supreme Commander) position, while 'Scheinstellung' translates to 'dummy position' or 'deception position', suggesting this was likely a decoy or simulated command post designed to mislead enemy forces.
This type of deception installation was commonly used during World War II to draw enemy fire away from actual military installations and command centers.