[3] The units were under the umbrella of the 5th Army[10] The Casernement de Bitche provided peacetime above-ground barracks and support services to Otterbiel and other positions in the area.

[11][12] Otterbiel saw relatively little action in 1940 compared to its neighbors, and surrendered to the Germans with the rest of the Bitche fortifications on 30 June 1940.

[14] Otterbiel was to be the next position to be attacked by the U.S. 100th Infantry Division, but the planned operation was disrupted by the Battle of the Bulge.

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

By 1953, Otterbiel had been designated part of the Mòle de Bitche, a strongpoint in the northeastern defenses against Soviet attack.