JM cloche

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The outside of a JM cloche Cloche jm.jpg
The outside of a JM cloche

The JM cloche is an element of the Maginot Line. It is a non-retractable non-rotating cupola of steel alloy like GFM cloches, but are armed with twin heavy machine guns, as opposed to the lighter automatic rifles associated with the GFM. There are 179 JM cloches on the Maginot Line.

Contents

JM is an acronym for Jumelage de Mitrailleuses (twin machine guns). [1] While the MAC 31 heavy machine guns were of the same caliber (7.5mm) as those in GFM cloches, they had a longer practical range 1,200 metres (3,900 ft) and a maximum range of 4,900 metres (16,100 ft), with a 500 round per minute rate of fire. [2]

Description

The inside of a JM cloche equipped with the twin machine guns Jm-cloche.jpg
The inside of a JM cloche equipped with the twin machine guns

The JM cloche closely resembles the GFM cloche in size and construction. It exists in three versions, all designed Model 1930: small, large and two-man. JM cloches had a single firing port, which was flanked on either side by trapezoidal observation ports. The blank rear was frequently backed by a concrete-covered embankment, which provided additional cover and reduced the prominence of the cloche. [1]

AM cloche

The AM (Armes Mixte) cloche, Model 1934, could mount a 25mm anti-tank gun and paired machine guns in two separate ports. It lacked the JM's observation ports. Shutters could be put in place to close unused ports. The AM existed in both a large and a small version. 72 AM cloches were installed solely in the New Fronts fortifications. [3]

AM conversions

Ten JM cloches were modified to accept a shortened 25mm anti-tank gun in place of the twin machine guns. The modifications took place in 1940 in several ouvrages of the northeast. [3]

See also

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The GFM cloche was one of the most common defensive armaments on the Maginot Line. A cloche (bell) was a fixed and non-retractable firing position made of a thick iron casting which shielded its occupant. By comparison, turrets could be rotated and sometimes lowered so that only the top shell was exposed.

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Ouvrage Bousse, also known as Ouvrage Bois de Bousse, is a lesser work of the Maginot Line in the Fortified Sector of Boulay. The ouvrage is located between petit ouvrage Hobling and gros ouvrage Anzeling, near Hestroff in the Bois du Bousse, facing Germany. A small position, it was manned primarily by reservists. It is noted for the events of 15 June 1940, when it received orders to prepare for an evacuation as German forces advanced along the Line in the Battle of France. As the garrison prepared to abandon the position, sabotaging equipment, they destroyed their telephone connection, leaving them unable to receive the order countermanding the evacuation. The garrison was captured three days after leaving Bousse. Bousse is now managed as a museum and is open to public visitation.

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<span class="mw-page-title-main">Ouvrage Coume Annexe Sud</span>

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<span class="mw-page-title-main">Ouvrage Kerfent</span>

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<span class="mw-page-title-main">Ouvrage Laudrefang</span>

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<span class="mw-page-title-main">Ouvrage Téting</span>

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Ouvrage Mauvais-Bois is a petit ouvrage of the Fortified Sector of the Crusnes on the Maginot Line. It is located between the gros ouvrage Latiremont and the petit ouvrage Bois-du-Four, facing the Belgium/Luxembourg border. The original plan for the position was for two phases of construction, resulting in a gros ouvrage provided with heavy artillery. The increase in tension between France and Germany in the late 1930s caused resources to be diverted elsewhere, and only the first three combat blocks were built. In 1940 the ouvrage was regularly bombarded, but not directly attacked by German infantry. When the French military divested itself of the majority of the Maginot fortifications, Mauvais-Bois was the second to be sold.

<span class="mw-page-title-main">VDP cloche</span>

The VDP cloche was an element of the Maginot Line fortifications. A cloche (bell) was a fixed and non-retractable firing position made of a thick iron casting which shielded its occupant. By comparison, turrets could be rotated and sometimes lowered so that only the top shell was exposed. VDP cloches were used for observation of the surrounding area for artillery direction. VDP is an acronym for Vision Directe et Périscopique. By comparison with the GFM cloche, the VDP cloche had narrower ports and was consequently lower in profile.

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<span class="mw-page-title-main">Ouvrage Otterbiel</span>

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Ouvrage Grand-Hohékirkel is a petit ouvrage of the Maginot Line, located near Bitche in the French département of Moselle. Grand-Hohékirkel is adjoined by gros ouvrage Otterbiel to the west and petit ouvrage Lembach at some distance to the east, and faces the German frontier. It was part of the Fortified Sector of the Vosges.

<span class="mw-page-title-main">Ouvrage Lembach</span>

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Ouvrage Bersillies is a petit ouvrage of the Maginot Line, built as part of the "New Fronts" program to address shortcomings in the Line's coverage of the border with Belgium. Like the other three ouvrages near Maubeuge, it is built on an old Séré de Rivières-system fortification, near the town of Bersillies. The preserved Ouvrage La Salmagne is nearby to the southeast. Bersillies is not open to the public.

Ouvrage Vélosnes is a gros ouvrage of the Maginot Line, located in the Fortified Sector of Montmédy between the towns of Othe and Vélosnes, facing Belgium. It possesses four combat blocks and one entrance block. It is located to the east of petit ouvrage Thonnelle. The position was sabotaged and abandoned by French forces that were ordered to retreat from the exposed position in June 1940 during the Battle of France. The ouvrage is abandoned and is administered as a nature preserve.

<span class="mw-page-title-main">Ouvrage Thonnelle</span>

Ouvrage Thonnelle is a petit ouvrage of the Maginot Line, located in the Fortified Sector of Montmédy between the towns of Thonnelle and Verneuil-Petit, facing Belgium. It possesses four combat blocks. It is located between gros ouvrages Vélosnes and Chesnois. The position was sabotaged and abandoned by French forces that were ordered to retreat from the exposed position in June 1940 during the Battle of France. The ouvrage is abandoned.

<span class="mw-page-title-main">Ouvrage Chesnois</span>

Ouvrage Chesnois, also known as Ouvrage Chênois, is a gros ouvrage of the Maginot Line, located in the Fortified Sector of Montmédy, facing Belgium. The ouvrage lies between the towns of Montlibert and Thonne-le-Thil. It possesses six combat blocks. It is located between gros ouvrage Thonnelle and petit ouvrage La Ferté. The position was sabotaged and abandoned by French forces that were ordered to retreat from the exposed position in June 1940 during the Battle of France. The ouvrage is now abandoned and sealed.

References

  1. 1 2 Mary, Jean-Yves; Hohnadel, Alain; Sicard, Jacques (2009). Hommes et Ouvrages de la Ligne Maginot, Tome 2 (in French). Histoire & Collections. p. 69. ISBN   2-908182-97-1.
  2. Mary, Tome 2, page 109
  3. 1 2 Mary, Tome 2, page 70

Bibliography

(in French) The Maginot Line