Christoph understood that something had changed in Bruno following the war in Manchuria. He was not acting like his usual self. Threatening his own family with violence over petty matters such as insults between children? It was not exactly something that a calm and rational man would do.
Because of this, he was quick to confront his father with the news. After all, the man which Bruno was named after was the only other member in their immediate family who had actually seen battle. With Bruno Sr. having served in both the Austro-Prussian War, and the Franco-Prussian wars during his younger years.
When the two of them were seated together in the Bundesrat where Bruno Sr. worked. There was little chitchat, with Christoph damn near immediately bringing up the conversation he had just had with his youngest brother.
"Father, have you spoken with Bruno since he returned home from the War in Manchuria?"