Group Fortification Marne
France · built 1907
The Feste Mercy, renamed Feste Freiherr von der Goltz in 1911 and then The Group Fortification Marne in 1919, is a military installation near Metz, in the woods between Jury, Mercy and Ars-Laquenexy. It is part of the second fortified belt of forts of Metz and had its baptism of fire in late 1944, when the Battle of Metz occurred.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).