Bruno walked to his personal office within his estate. It was a room that only he was permitted to enter. Anyone else who wished to enter would first be required to have been given his express permission to do so. Even his beloved wife could only knock on the door outside and request entry.
The reason for this was simple: Bruno's workload was massive, and he needed a quiet and solitary place free from distraction to conduct his business outside of his employment as a Generaloberst in the Imperial German Army.
With three young children who were liable to go running through rooms screaming and hollering like a bunch of howler monkeys whenever they got a little too rambunctious, it was no wonder that Bruno established these rules and made them very clear to both his family and the staff who lived and worked out of the massive and luxurious estate.