It is the only Maginot Line ouvrage to be completely captured by enemy forces through direct assault.
The fort was attacked by the German 7th Company of the 151st Infantry Regiment using hollow-charge explosives.
All 107 French soldiers died of asphyxiation and wounds after carbon monoxide from explosions filled the underground chambers.
The exterior of the combat blocks still displays visible scarring from the 1940 combat, unique among Maginot fortifications.
The underground gallery system remains preserved in its 1940 state, untouched by post-war modernization.
The structure was designed to provide flanking fire for the neighboring Fort de Villy-la-Ferté.
Ouvrage de La Ferté is the only infantry fort of the Maginot Line to have seen active combat during the 1940 German invasion. It consists of two combat blocks connected by an underground gallery system situated 26 meters below ground level. On May 19, 1940, the entire garrison of 107 men was killed during a sustained assault by German combat engineers. The site serves as a memorial, preserving the shell holes and interior damage from the direct battle. Visitors can descend into the fortification to see the original ventilation, ammunition storage, and barracks. It is located near the French-Belgian border in the Ardennes department. The fort remained under German occupation until the liberation of the region. The site is managed by a local association that maintains the interior as it appeared during the siege.
The exterior combat blocks showing original battle damage and shell impacts.
Bring a light jacket as the underground tunnels maintain a constant, cold temperature year-round.
Wear sturdy, non-slip footwear suitable for uneven concrete surfaces.
Follow the guided tour strictly, as the site contains remnants of unexploded ordnance or hazardous zones.
Do not wander off the marked paths or touch the historical equipment, as many structures are fragile or sensitive.
Open seasonally from spring through autumn, typically closed on weekdays outside of July and August.
Respect the site as a war grave; maintain a quiet and somber demeanor while inside the blocks.
