Which country built the Ouvrage Pas du Roc?
Ouvrage Pas du Roc Ouvrage Pas du Roc is a work ("gros ouvrage") of the Maginot Line's Alpine extension, the Alpine Line. The ouvrage consists of one entry blocks, one infantry block, two artillery blocks and one observation block 6 km south of Modane and 1.6 km east of Ouvrage Le Lavoir in the vicinity of the Col de Fréjus. The position was incomplete at the outbreak of war in 1940.
Fort du Bois d'Oye Fort Bois d'Oye, also known as Fort Eblé, is located in the commune of Bermont. It was built between 1883 and 1886. It is part of the second ring of fortifications around the city of Belfort in northeastern France. This second ring of forts was built as part of the Séré de Rivières system and incorporated improvements to deal with the improvement in efficacy of artillery in the late 19th century.