Fortified Sector Of The Jura
The Fortified Sector of the Jura (''Secteur Fortifiée du Jura'') was the French military organization that in 1940 controlled the French frontier with Switzerland in the general area of Besançon. The area was lightly fortified, since the Swiss border was regarded as a low-risk frontier, save for the possibility of an advance from Germany through Switzerland into France. The Jura Mountains and the Doubs River presented natural barriers to invasion, allowing defenses to concentrate on a few points of potential access. The SF Jura was bordered on the east by the Fortified Sector of Montbéliard.Mary, Tome 1, p. 15 Concept and organization The sector's chief fortifications were old Séré de Rivières positions like the Fort de Joux, Fort de Larmont and the Fort Saint-Antione. A late effort in 1939-1940 constructed the CEZF Line, consisting of two sections of casemates. The northern section around Morteau consisted of four casemates, of fourteen proposed. The southern section ...
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Besançon
Besançon (, , , ; archaic german: Bisanz; la, Vesontio) is the prefecture of the department of Doubs in the region of Bourgogne-Franche-Comté. The city is located in Eastern France, close to the Jura Mountains and the border with Switzerland. Capital of the historic and cultural region of Franche-Comté, Besançon is home to the Bourgogne-Franche-Comté regional council headquarters, and is an important administrative centre in the region. It is also the seat of one of the fifteen French ecclesiastical provinces and one of the two divisions of the French Army. In 2019 the city had a population of 117,912, in a metropolitan area of 280,701, the second in the region in terms of population. Established in a meander of the river Doubs, the city was already important during the Gallo-Roman era under the name of ''Vesontio'', capital of the Sequani. Its geography and specific history turned it into a military stronghold, a garrison city, a political centre, and a religious c ...
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