During the Lorraine Campaign of 1944 Schiesseck was occupied by German forces and presented a point of resistance to American advances, requiring heavy bombardment and infantry assaults by engineer units to capture.

In the 1950s Schiesseck was repaired as part of a program to re-arm the Maginot Line against a potential advance by Warsaw Pact forces.

Schiesseck was served by a 60 cm-gauge narrow-gauge railway, which enters at the munitions entrance and runs all the way out through the galleries to the combat blocks.

The nearby Casernement du Freudenberg provided peacetime above-ground barracks and support services to Schiesseck and other positions in the area.

[22] On 14 December, the 398th regiment the U.S. 100th Infantry Division assaulted Schiesseck,[23] after an aerial and artillery bombardment,[24] even using captured German 8.8cm guns and 8" howitzers.

Because Schiesseck's visible installations had been effectively destroyed in December, the ouvrage itself played no role in the German defense.

[25] Following World War II, interest revived in the use of the Maginot Line to defend against a possible Soviet advance through southern Germany.

In 1951, Schiesseck had been designated part of the Mòle de Bitche, a strongpoint in the northeastern defenses against Soviet attack.