Ouvrage Kobenbusch

The Kobenbusch position forms the point of the Cattenom salient, where the east-west defensive line turns to the south.[1] The site was surveyed by CORF (Commission d'Organisation des Régions Fortifiées), the Maginot Line's design and construction agency, in 1930. Work by the contractor Verdun-Fortifications began in 1931,[2] and the position became operational in 1935,[3] at a cost of 65 million francs.[4][5]

Kobenbusch 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. On the surface, the railway connects to supply points to the rear and to other ouvrages.[nb 1]

Kobenbusch is a relatively compact gros ouvrage, with a short main gallery leading in from the munitions and personnel entrances past to underground barracks to the combat blocks. Unusually for a gros ouvrage, it possesses no "M1" main ammunition magazine.[2]

• Ammunition entrance: Shaft entry, two automatic rifle cloches (GFM), 3 FM embrasures and a machine gun/47mm anti-tank gun (JM/AC47) embrasure.[8]
• Personnel entrance: Shaft entry, one GFM cloche and one JM/AC47 embrasure.[9]
• Block 1: one machine gun turret and GFM cloche.[10]
• Block 2: one machine gun embrasure (JM), a JM/AC47 embrasure and two GFM cloches.[11]
• Block 3: one observation cloche (VDP) and a GFM cloche.[12]
• Block 4: one machine-gun turret, a machine gun cloche (JM) and a GM cloche.[13]
• Block 5: one 75mm turret and a GFm cloche.[14]
• Block 6: one 50mm mortar turret and a GFM cloche.[15]
• Block 7: three 75mm gun embrasures, two GFM cloches and a grenade launcher cloche (LG).[16]

Block 2, embrasures and the diamant ditch

.

The manning of the ouvrage in 1940 comprised 513 men and 14 officers of the 169th Fortress Infantry Regiment and the 151st Position Artillery Regiment. The units were under the umbrella of the 42nd Fortress Corps of the 3rd Army, Army Group 2.[19] The commandant de l'ouvrage in 1940 was Commandant Charnal.[2] The Casernement de Cattenom provided peacetime above-ground barracks and support services to Kobenbusch and other ouvrages in the area.[20]

See Fortified Sector of Thionville for a broader discussion of the events of 1940 in the Thionville sector of the Maginot Line.

Kobenbusch did not see significant action in the Battle of France in 1940, nor in the Lorraine Campaign of 1944. Kobenbusch provided suppressing fire against German infiltrators on the surface of Oberheid. About the same time, a party of Germans infiltrated the area of Kobenbusch Block 5.[21] The Germans largely bypassed the area, advancing along the valley of the Meuse and Saar rivers, threatening the rear of the Thionville sector. An order to fortress troops by sector commander Colonel Jean-Patrice O'Sullivan to prepare for withdrawal on 17 June was reversed by O'Sullivan.[22] The garrison therefore remained in place. Following negotiations, the positions on the left bank of the Moselle finally surrendered to the Germans on 30 June 1940.[23]

While the entry and combat blocks remain visible, the underground galleries, barracks, ammunition magazine and utility areas, which lie at an average depth of 30 meters (98 ft) below the surface,[24] have been flooded by the cooling water lake of the nearby Cattenom Nuclear Power Plant. The site has been owned by EDF since the construction of the power plant in 1981.[25] It is maintained by the Association Ligne Maginot du Secteur Fortifié du Bois de Cattenom, which manages Bois Karre, the Abri du Bois de Cattenom, Ouvrage Sentzich and Ouvrage Galgenberg. A pedestrian path through the surface installation is under development, and the Abri du Bois de Cattenom may be visited at times.[18][26]

• List of all works on Maginot Line
• Siegfried Line
• Atlantic Wall
• Czechoslovak border fortifications

• Allcorn, William. The Maginot Line 1928-45. Oxford: Osprey Publishing, 2003. ISBN 1-84176-646-1
• Kaufmann, J.E. and Kaufmann, H.W. Fortress France: The Maginot Line and French Defenses in World War II, Stackpole Books, 2006. ISBN 0-275-98345-5
• Kaufmann, J.E., Kaufmann, H.W., Jancovič-Potočnik, A. and Lang, P. The Maginot Line: History and Guide, Pen and Sword, 2011. ISBN 978-1-84884-068-3
• Mary, Jean-Yves; Hohnadel, Alain; Sicard, Jacques. Hommes et Ouvrages de la Ligne Maginot, Tome 1. Paris, Histoire & Collections, 2001. ISBN 2-908182-88-2 (in French)
• Mary, Jean-Yves; Hohnadel, Alain; Sicard, Jacques. Hommes et Ouvrages de la Ligne Maginot, Tome 2. Paris, Histoire & Collections, 2003. ISBN 2-908182-97-1 (in French)
• Mary, Jean-Yves; Hohnadel, Alain; Sicard, Jacques. Hommes et Ouvrages de la Ligne Maginot, Tome 3. Paris, Histoire & Collections, 2003. ISBN 2-913903-88-6 (in French)
• Mary, Jean-Yves; Hohnadel, Alain; Sicard, Jacques. Hommes et Ouvrages de la Ligne Maginot, Tome 5. Paris, Histoire & Collections, 2009. ISBN 978-2-35250-127-5 (in French)

Wikimedia Commons has media related to Ouvrage Kobenbusch.

• Ouvrage Kobenbusch official site
• Kobenbusch at Ligne Maginot du Secteur Fortifié du Bois de Cattenom (LM SFBC) (in French)
• Gros Ouvrage du Kobenbusch (in French)
• The Maginot Line
• Kobenbusch at fortiff.be (in French)
• Ouvrage du Kobenbusch at wikimaginot.eu (in French)
• L'ouvrage du Kobenbusch at alsacemaginot.com (in French)