During the Second World War, the Buhlert was part of the highly contested northern Eifel, for example, during the Battle of Hürtgenwald, the scene of defense of the Wehrmacht against the attacking US Army. Even today, trenches, bomb craters, bunkers and excavated finds are evidence of the heavy fighting.
Also over the Buhlert stretched the Westwall with its bunkers, of which today still some are well preserved and safely accessible. The remaining bunkers are the group shelters 131 and 132 built in the course of the Limes program, the double group stand 139/140, the MG bunker 135 and a bunker for water supply. The latter is still in operation today and is used in exercises by the volunteer fire department. There is also a small water reservoir for the nearby Reichsarbeitsdienst camp right next to the car park on the L 246.
During the construction work to build the bunkers, a "bunker road" was built to provide the construction sites with the necessary material. The road is still preserved today as a paved forest road. For the work of the Reich Labor Service was responsible, whose camp was 7/315 on the site of today's Wandererparkplatzes on the L 246th Of these, no remains are recognizable today.