Bruno's father was shocked when his son came to personally visit him. As a member of the Bundesrat, and the current head of the Land Army and Fortresses Committee, he had long since handed off control of the family's company to his eldest son, Franz. Franz was much older than Bruno. By the time Bruno was five, he was already nearing the age of university.
He had proven himself a capable businessman after retiring from the military. Where he served as an officer during a time of peace, only ever making the rank of captain before ending his military career in the shortest period possible.
It was because of this significant age gap between the two brothers who sat at the opposite ends of the age spectrum. That Bruno had very little contact with Franz, only ever seeing him at family gatherings for the majority of his life.