Fort d'Illange
| Fort d'Illange | |
|---|---|
| Part of Thionville festen/Fortified group of Thionville | |
| Thionville, France | |
Fort d'Illange
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 Fort d'Illange
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| Coordinates | 49°20′02″N 6°10′36″E / 49.33397°N 6.17674°E |
| Type | Fort, Moselstellung |
| Site information | |
| Controlled by | France |
| Open to the public |
Yes |
| Condition | Abandoned, surface accessible |
| Site history | |
| Built | 1905 |
| Battles/wars | Lorraine Campaign |
The Fort d'Illange is a fortification located to the south of Thionville in the Moselle department of France. It was built by Germany next to the town of Illange in the early 20th century after the annexation of the Moselle following the Franco-Prussian War. The Fort d'Illange was part of the Moselstellung, a group of eleven fortresses surrounding Thionville and Metz to guard against the possibility of a French attack aimed at regaining Alsace and Lorraine, with construction taking place between 1905 and 1911. The fortification system incorporated new principals of defensive construction to deal with advances in artillery. Later forts, such as Illange, embodied innovative design concepts such as dispersal and concealment. These later forts were designed to support offensive operations, as an anchor for a pivoting move by German forces into France.
The Feste Illangen, as Fort d'Illange was called by the Germans, with Fort de Guentrange and Fort de Koenigsmacker, assured the protection of Thionville against French attack. Positioned to the rear of the principal lines of combat in the First World War, the fort never saw combat in that war, but was captured by advancing American forces in the Lorraine Campaign of World War II.
The Fort d'Illange is located about 4 kilometres (2.5 mi) to the south of Thionville on a hilltop overlooking the Moselle. It was defended by a garrison of 1200 men. Like the Fort de Koenigsmacker, Illange features an armoured battery, originally armed with four short 100mm guns in single turrets. Four separate fortified barracks housed troop, with underground galleries connected the battery, barracks, and infantry positions.
The dispersed, un-walled nature of the later Moselstellung was a significant innovation. Compared to the French Séré de Rivières system forts of the same era, later German fortifications such as Illange were scattered over a large area and enclosed chiefly by barbed wire. While certain individual elements presented imposing walls to an attacker, these walls were not continuous. The dispersed nature is evidenced by the official French name: the Groupe Fortifié d'Illange (Fortified Group of Illange). These arrangements were studied and improved upon by the French in the construction of the Maginot Line.
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