Fortified Sector of Montmédy
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The Fortified Sector of Montmédy (Secteur Fortifié de Montmédy) was the French military organisation that in 1940 controlled the section of the Maginot Line between Sedan and Longuyon, a distance of about 60 kilometres (37 mi). The sector was not as strongly defended as other sections of the Maginot Line, facing the southern Ardennes region of Belgium. Large portions of the Montmédy sector were defended by fortified houses, blockhouses or casemates. The sector includes only four ouvrages of the type found in stronger sections of the Line. The weakly defended area in front of Sedan was the scene of a major breakthrough by German forces in the opening of the Battle of France. This was followed by a German assault on the Maginot Ouvrage La Ferté, which killed the entire garrison, the only such event on the Maginot Line.