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RF des Flandres S.F. de l'Escaut (8) S.F. de Maubeuge (10) S.F. de Montmédy (6)

RF de Metz S.F. de Thionville (46) S.F. de Boulay (40) S.F. de Faulquemont (15) S.F. de Crusnes (25)

RF de Lauter S.F. de Rohrbach (27) S.F. des Vosges (44) S.F. d'Altkirch (13) S.F. de Mulhouse (1)

RF des Alpes S.F. de Savoie (11) S.F. du Dauphiné (7) S.F. des Alpes Maritimes (15) Corse (4)

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Artillery casemate (15)Blockhaus (76)Casematte (98)Lesser work (46)Main fort (37)Observervation (10)Other (20)Shelter (63)

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Normandy Juno Beach (1) Omaha Beach (4) Sword Beach (5) Utah Beach (11)

Atlantic Coast AOK 15 (11) Etretat (1)

Netherlands FK Walcheren (2) Vlissingen Landfront (14) Vlissingen Seefront (1)

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Abri du Coucou (X22) - Sector Boulay

Closed abri caverne with connection to PO du Coucou (A20).

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