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Origin and history

Hoedic Fort, also known as Fort Louis-Philippe, is a military building built between 1847 and 1853 on the island of the same name in Morbihan (British). It replaces a first fort destroyed in the 18th century after repeated English occupations (1693, 1746, 1759). This new trapezoidal structure, flanked by four bastionnets, includes a three-level barracks and a dry ditch. Designed to house 200 soldiers and light artillery, it was abandoned as early as 1874, for lack of strategic utility.

The fort was transformed into a communal school in 1881 and then into an iodine extraction plant (1892–1931) operated by the burning of goemons. During the Second World War, the Germans installed a DCA battery there in 1942. Repurchased by the Conservatoire du littoral in 1979, it now houses a stage cottage and associations. Its architecture reflects the standards of the mid-19th century coastal fortifications, with a earth-moving artillery rider and parapets suitable for infantry defense.

The fort has been listed as a historic monument since 2000, recognizing its role in Breton military history and its subsequent civilian adaptation. Its route, inspired by strong islanders such as Houat, illustrates the compromises between coastal defence and budgetary constraints. Local materials (granite from Hoedic, Trégunc or Crac.

The origins of the fort date back to the wars of Succession of Austria and Seven Years, when the islands of Houat and Hoedic served as bases for the English. The Commission of Fortifications of 1841 imposed its reconstruction as a defensive reduction, with a theoretical armament of 30 pound guns and 22 cm shells. Despite the more ambitious initial projects (1845), the Committee opted for a reduced route, considered sufficient for an island with little exposure to marine fire. The work was completed in 1855–56, but the evolution of artillery made the work obsolete as early as the 1870s.

After its disarmament in 1875, the fort was transferred to the commune, then sold in 1893 to an industrialist specialized in the guemon, who used it as a warehouse without complying with the obligation of partial demolition. During the First World War, he briefly hosted an anti-submarine defence post. Its designation as historic monuments in 2000 enshrines its status as an island heritage, combining military heritage, civil adaptations and contemporary memorial issues.

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