A battery of three 3.7cm Flak guns was established at Les Houards (and the works associated with such an installation), in the fields adjacent to the present site of the German Occupation Museum. The battery was field order, although concrete bases may have been built. In 1944, the guns were transferred some 850m south to La Moye, where they remained until liberation. A substantial Luftwaffe firing range was built here, from which a large building survives.
Part of the range survives. The original roof-line is visible. The building has thin walls, and the original roof was no more than a wooden cap for weather protection. Originally, the front of the building was open, and this is traceable. Armored metal plates provided a taxiway from the airport to the range, and most were reused post-war by farmers and none survive in-situ. A small sunken area of ground marks the direction of the range heading west, as well as a gap in the road boundary.