High Quality Content by WIKIPEDIA articles! Ouvrage Hackenberg, one of the largest (a gros ouvrage) of the Maginot Line fortifications, was part of the Fortified Sector of Boulay. It is situated twenty kilometers wast of Thionville, in the Moselle département, near the village of Veckring, on the Hackenberg (343 meters). It was located between gros ouvrage Billig and petit ouvrage Coucou, facing Germany. The gros ouvrage (large work) is composed of 17 combat blocks and 18 artillery pieces, with 10 kilometers of galleries. The galleries are between 25 and 30 meters below the surface to protect against bombardment.
High Quality Content by WIKIPEDIA articles! Ouvrage Billig, a gros ouvrage or large fortification of the Maginot Line, was located in the Fortified Sector of Thionville, Moselle in northern France. It is located between the gros ouvrages Metrich and Hackenberg, facing Germany. This gros ouvrage is unusual in having one entrance for both vehicles and personnel. Billig was not subjected to significant attack by the Wehrmacht in 1940. After World War II it was used for ordnance testing by the U.S. Army and German Army. The ouvrage was then abandoned by the French Army.