Ouvrage Bois-du-Four
Ouvrage Bois-du-Four is a lesser work ("petit ouvrage") in the Fortified Sector of the Crusnes of the Maginot Line. The ouvrage consists of a single large combat block without an underground gallery system, and is located between "petit ouvrage" Mauvais-Bois and "gros ouvrage" Bréhain, facing Luxembourg. A planned expansion, never carried out, was intended to enlarge Bois-du-Four into a fully equipped "gros ouvrage". Bois-du-Four saw little action in either the Battle of France in 1940 or the Lorraine Campaign of 1944. It is preserved by the community of Villers -la-Montagne and may be visited. Design and construction. Bois-du-Four was approved for construction in May 1931. It was completed at a cost of 9 million francs by the contractor Monod of Paris. It was designed as a unitary double casemate, occupying a prominent rise in a cleared area. In a second phase, Bois-du-Four was to be expanded to a plan that would result in a close resemblance to its neighbor Bréhain, with five additional blocks mounting artillery, as well as remote entrances for munitions and personnel, and an extensive network of deep underground galleries. The  rise in tensions between France and Germany in the late 1930s prevented this second phase from being pursued. Description. Only Block 1 of the proposed "gros ouvrage" was actually built, with five more combat blocks and two entry blocks deferred to a second phase that was never pursued. The large single block was arranged on two levels with a remarkably heavy armament. The proposed "gros ouvrage" would have been one of the most heavily armed artillery positions in the Line. The single existing block was armed as follows: The planned additional blocks were: If built as intended, Bois-du-Four  would have resembled its neighbor Bréhain, apart from Bois-du-Four's unusual initial block. A compact arrangement of combat blocks would have been connected to separate munitions and personnel entrances via a long, deeply buried underground gallery of more than in length, with a utility area, barracks and an "M1" magazine located near the entries. The entries were to be located in a small ravine, giving shelter and allowing for simpler access to the level of the galleries. Casemates and shelters. A series of detached casemates and infantry shelters surround Bois-du-Four, including None of these are connected  to the "ouvrage" or to each other. The Casernement de Morfortaine provided peacetime above-ground barracks and support services to Bois-du-Four and other positions in the area. Manning. The 1940 manning of the "ouvrage" under the command of Lieutenant de Mecquenem comprised 135 men and 2 officers of the 139th Fortress Infantry Regiment. The units were under the umbrella of the 42nd Fortress Corps of the 3rd Army, Army Group 2. de Mecquenem would go on to fight in Tunisia and eventually at Dien Bien Phu, retiring as a brigadier general. History. In June 1940, the German 183rd  Division considered a plan to penetrate the Maginot Line between Bois-du-Four and Mauvais-Bois, eventually rejecting it in favor of operations farther to the east. Bois-du-Four saw mostly harassing attacks through June. After the 22 June 1940 armistice brought an end to fighting, the Maginot fortifications to the west of the Moselle did not immediately surrender. They maintained their garrisons through a series of negotiations. Bois-du-Four, along with Mauvais-Bois, Bréhain and Aumetz surrendered on 27 June. The German occupiers stripped Bois-du-Four of its furnishings and equipment. The area of Bois-du -Four saw little action during the Lorraine Campaign of 1944. During the 1950s and 1960s the Maginot Line was kept in readiness for possible use in the event of an invasion by the Warsaw Pact. After the establishment of the French nuclear strike force, the importance of the Line declined, and in 1970 Bois-du-Four was lowered in importance, allowing the use of formerly reserved areas around the "ouvrage". During the 1970s the majority of the Maginot "ouvrages", including Bois-du-Four, were sold to the public. Present. Bois-du-Four is maintained by the Association de Préservation du  Patrimoine of Villiers-la-Montagne, which took over the property in 1993. It is open to the public in summer months.