Engineering series 4: Ouvrage Hackenberg


In spring 2017 I spent my holidays in Northern France for both improving my French skills and for expanding my cultural and historical knowledge.

History is a subject I’ve been interested in my whole life, so I was glad to have the opportunity to visit several former war zones in Lorraine and Alsace (Elsass-Lothringen1 ) near the border to Germany and Luxembourg.

1 German and French names of places, sights, cities etc. will be rendered in italics in this article

The entire border area from the Atlantic ocean to Switzerland was one (or the) main theater for war operations during the 1st and the 2nd World War.

Hence a lot of monuments, museums and remains of fortifications like the Maginot Line, which was constructed after the 1st World War, can be found and visited in those now archaeological excavation and exposition sites.

The Maginot Line

After France being on the brink of defeat in the first great war of the 20th century, French engineers contrived a sophisticated system of concrete bunkers and forts alongside the border to Germany, with building measures initiated in 1929.

The Maginot Line covered almost the entire border area, but had comparatively weak fortifications alongside the frontier to Belgium, especially in the Ardennes (Ardennen). Here the French high command did not expect major offensive operations by westwards advancing German armies.

As it eventually turned out in the Battle of France, the Line was of no value whatsoever. In June 1940, the Wehrmacht marched through Belgium and the Netherlands (by violating their neutrality) and circumvented the strong points of the French defence system.

The erection of the whole Maginot Line was one of the most useless engineering works in the 20th century and nothing but a waste of resources (similar to the German Atlantikwall).

Fort Hackenberg

The Ouvrage Hackenberg (ouvrage can be translated as “construction” or “work”) was the largest single Maginot Line bastion, designed for a garrison of one thousand soldiers.

The fort is situated about thirty kilometers northeast of Metz, the biggest (120.000 inhabitants) city in Lorraine (Lothringen).

Le Hackenberg near Metz
Disused American tank and the road to hill Hackenberg (343 meters)

The construction of the fort devoured enormous resources, and the irony was that parts of it were used by the Germans in an attempt to resist American troops in late 1944.

Ouvrage Hackenberg, entrance
Ouvrage Hackenberg, entrance for visitors

I attended a guided tour through parts of the facility that are opened to the public. The tour included small museums and exhibitions about, for example, ammunition, state-of-the-art weaponry and the logistics for the garrison.

The fort possesses several levels and extends over several kilometers, so there exists an electric trolley that carries tourists through the murky tunnels. Here the temperature never exceeds 12 degrees Celsius, so just a T-shirt is not a proper outfit for a visit of at least one hour duration (typical are two hours).

Interesting to see were also the four souterrain diesel generators, which were still ready for operation as far as I remember. They ensured the autonomous power supply for the ouvrage.

Ouvrage Hackenberg, inside the bunker
Ouvrage Hackenberg, inside the bunker

The facility on the whole is well-preserved since it was never involved in any major defense battles.

The only exception was in 1944 as the westwards aligned block 8 served the Wehrmacht temporary as a strong point against the advancing U.S. Army.

Ouvrage Hackenberg, le bloc 8
Le bloc 8 du Hackenberg, the reinforced concrete structure easily recognizable

The used material for the bunker systems was reinforced concrete with a special concrete compound, which was very resistant against most kinds of shellfire.

1st World War fortifications

Unlike the 2nd World War, Lorraine was heavily devastated 1st World War (1914-1918) with its almost static front line between the war parties.

However, the numerous and powerful fortifications were the decisive factor for the eventually successful defense battles of the French Army against the Reichsheer. Hence catalyzing the notion of building an even stronger system of bunkers and forts to withstand future attacks.

But these sorts of stationary defense systems were not longer very effective and outdated against the emerging mobile warfare twenty-five years later.


Ligne Maginot – Hackenberg Fort