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Origin and history

Giromagny Fort, also called Fort Dorsner in tribute to General Jean Philippe Raymond Dorsner, was built between 1875 and 1879 as part of the Séré de Rivières defensive system, designed after the French defeat of 1871. Built into the defence curtain of the Haute Moselle, it was planned to accommodate 650 soldiers and housed about 50 artillery pieces. Its construction reflected the desire to strengthen France's eastern borders in the face of the German threat.

The fort, which was upgraded in 1888 with reinforced concrete storage and caponières, was also equipped with two Mougin turrets in 1881, a technological innovation for the time. During the First World War, he underwent new developments, such as a shelter to protect troops from aerial bombardments. These adaptations illustrate the evolution of military strategies in the face of the progress of artillery and aviation.

On June 18, 1940, the garrison fired a few shells at German troops before surrendering. Under the occupation, the Germans dismantled the metal equipment, including the turrets, sent to the foundries of the Third Reich. In November 1944, the fort briefly served as an observation post for the French forces after his release. Abandoned until 1988, it was bought by the municipality of Giromagny and entrusted to the Association du Fort Dorsner for its restoration.

The fort is distinguished by its trapezoidal plan and its successive developments, such as the cellar shops of 1888, initially lit with electricity before being converted to oil lighting. The double caponière, reinforced in concrete after the torpedo-bus crisis, bears witness to the defensive adaptations of the late 19th century. Ranked a Historical Monument in 1995, it now embodies a preserved military heritage, open to visit and managed by a local association.

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