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.
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]
^Mary, Jean-Yves; Hohnadel, Alain; Sicard, Jacques (2009). Hommes et Ouvrages de la Ligne Maginot, Tome 2 (in French). Histoire & Collections. p. 69. ISBN 978-2-908182-97-2.
The JMcloche 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...
VP cloches but have two or three openings to provide a direct view. Consequently, they were not covered by concrete. GFM clocheJMcloche AM cloche LG...
the JM Reibel, from Jumelage de mitrailleuses, or Reibel twin-mounted guns and really refers to the specialized twin-mounting frame used in JMcloche cupolas...
cloche lacked direct observation ports, presenting a much lower profile. Twenty VP cloches were installed. JMcloche, heavy twin machine gun cloche LG...
cloche (LG), one GFM cloche and one JMcloche. Block 7: East entry block with two GFM cloches and two machine gun/47mm anti-tank gun embrasures (JM/AC47)...
one JM/AC47 embrasure. Radio communications were also available at this location. Block 8: Personnel entry with one GFM cloche, one LG cloche, one JM/AC47...
to Lance-Grenade (grenade launcher). Unlike other cloches such as the GFM or the JM, the LG cloche was effectively "blind", possessing a single shuttered...
one machine gun turret, one GFM cloche and one JMcloche. Block 7: Infantry block with one GFM cloche and one VDP cloche. A modern communications tower...
gun cloches (JM) and one GFM cloche. Block 2: Infantry block with one machine-gun turret, one GFM cloche, one JMcloche and one periscope cloche (VDP)...
VDP cloche. Block 4: Artillery block with one GFM cloche, one JMcloche and two 81mm mortar embrasures. Block 5: Infantry block with two GFM cloches and...
embrasure (JM/AC37), one machine gun cloche (JM), and a GFM cloche. Block 23: a small block armed with two GFM cloches and a grenade-launcher cloche (LG)....
one JM/AC47 embrasure, one JM embrasure, two AM cloches and one GFM-B cloche. Casemate de Fresnois: Double block with two JM/AC47 embrasures, two JM embrasures...
one JM embrasure, two AM cloches and two GFM-B cloches. Casemate de Sapogne: Single block with one JM/AC47 embrasure, one JM embrasure, two AM cloches and...
turret and one GFM cloche. Block 6: Artillery block with one 135mm gun turret, one GFM cloche, one grenade launcher cloche (LG), oneJMcloche and one emergency...
block with one observation cloche (VDP), one GFM cloche, one 81mm mortar cloche, one twin machine gun embrasure and one JM/AC47 embrasure. Block 3: Infantry...
mortar cloche and two GFM cloches. Casemate du Gros-Bois: Single block with one JM/AC47 embrasure, one JM embrasure, one mortar cloche and one GFM cloche. Abri...
one JM/AC47 embrasure, one JM embrasure and two GFM cloches Observatoire de Puxieux: One VP observation cloche, one mortar cloche and one GFM cloche, reporting...
(JM/AC47). Block 2: Infantry block with one GFM cloche and one JMcloche. Block 3: Infantry block with one GFM cloche and one retractable twin machine gun turret...
gun embrasure (JM), two GFM cloches, one machine gun turret. Entry: one JM/AC47 embrasure, one grenade launcher cloche, one GFM cloche. A planned Block...
automatic rifle cloche (GFM) and one twin machine gun cloche (JM). Block 2: Infantry block with one GFM cloche, one grenade launcher cloche (LG) and one...
gun/anti-tank gun embrasures (JM/AC47), two machine gun embrasures (JM), two automatic rifle cloches (GFM) and one machine gun cloche (JM). The block also served...
embrasures, one mixed arms cloche (AM) and one GFM cloche Block 3: Infantry block with two twin machine gun embrasures, one JM/AC437 embrasure, one retractable...
GFM cloche and two JMcloches. Nearby are a false machine gun cloche and a mock machine gun turret. Block 5: Infantry block with one GFM cloche and two...
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