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Origin and history

Fort Dorsner, also known as Giromagny Fort, 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 house 650 men and about 50 artillery pieces. His name pays tribute to the general of Empire Jean Philippe Raymond Dorsner, although his construction was after his time.

The fort was modernized in 1888 with storehouses and concrete reinforcements and was also developed during the First World War, such as the construction of a shelter. In June 1940, his garrison fired a few shells at German troops before surrendering. The German occupants then dismantled its metal equipment, including two Mougin turrets, sent to the foundries of the Third Reich in 1941.

After the Liberation, the fort served briefly as an observation post in November 1944 for the 411th Regiment of Algerian Tirriers. Abandoned until 1988, it was then bought by the municipality of Giromagny and entrusted to the Association du Fort Dorsner (AFD) for its restoration. Today, it reflects the military architecture of the 19th century and the successive adaptations to technological developments, such as the torpedo-bus crisis.

Among its notable features, the fort retains a double reinforced concrete caponière, originally designed to be replaced by counterscarp chests, as well as warehouses equipped with electrical lighting, replaced by oil lamps due to frequent breakdowns. A shelter, built in 1915, illustrates the adaptations to protect troops from aerial bombardments.

Ranked a Historical Monument in 1995, Fort Dorsner is a representative example of the fortifications of eastern France, marking both the legacy of General Séré de Rivières and the upheavals of the two world wars.

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