Fort de Giromagny

Fort de Giromagny, also known as Fort Dorsner, was built near Belfort in northeastern France between 1875 and 1879. The fort forms the southern end of the defensive curtain of the Haute Moselle Region, abutting the Fortified region of Belfort, which lies to its south. The Haute Moselle defenses form a link between the fortified encampments of Épinal and Belfort. The fort overlooks the main roads to the northeast of Belfort, which form a crossroads at Giromagny.

The fort was built as part of France's Séré de Rivières system of fortifications to defend France against a recurrence of the Prussian invasion of the 1870-71 Franco-Prussian War. The fort was among the most strongly armed forts in the northeast in the late 19th and early 20th centuries.