Oberndorf was well protected against bombings.
It was hit twice only with relatively minimal damage.
It is situated in a valley over which steel lines were mounted, with steel lines suspended from them, creating giant steel curtains that would shred a plane to pieces.
They also had a decent blackout scheme and fog machines. As well as AA platforms all throughout and around the town.
In WW1 they built a fake factory in a nearby valley. It was bombed by the French several times. When the French discovered the scheme, they bombed it with fake bombs
