The large ports of northern France were prime targets for Allied bombing raids following the capture of France by Germany and the port and railyards to the west of the town of Dunkirk received lots of attention.
At most of these strategic sites German forces built a ring of fire around the area with anti-aircraft positions. Stp Udet was a Luffwaffe site featuring two Waffenkomission-Fest or WaKoFest emplacements for 88mm flak guns, the remains of which can still be seen today on the left hand side of the road leading from nearby Stp Eduard S-Boat bunker site towards the point of Molenfuss West and the semaphore station.
These two buildings are in a derelict state and partially buried but you can access the roof areas of both and make out the spots where the huge guns would have stood. Two ramps on either side of the buildings are still visible, although collapsed, as are several niches where ammunition was stored.
Extra concrete walls were constructed on the western sides of the buildings, and these must have given added protection to the crew rooms inside from the prevailing line of attack from aircraft.