The brick construction, parts of which have still been preserved, turned out to be unable to withstand the new generation of shells. Therefore, it was reinforced with concrete until 1913.
Disinformation
Despite the improvements made to the fort, it fell into the hands of the German army almost without a fight at the start of the Battle of Verdun in February 1916. That was also the result of a clever disinformation campaign set up by the Germans, who had heavily highlighted the easy destruction of the Belgian forts.