Bruno was at home following his day's work. He had been extremely busy following the establishment of the Deutsche Luftstreitkräfte. Though Bruno was not the one to become the acting general in charge of the unit, he was the one trusted with organizing it.
After all, the planes that were to be used were more or less his brainchild. And if he had such advanced knowledge of aerospace engineering, then surely, he would have some idea of how to use them on the battlefield, right?
Well, that was actually a correct assumption, even if it wasn't the most logically sound in terms of reasoning. Bruno did indeed have some understanding of aerial warfare.
Not because he served in the air force in his past life, but he was what one might call a "military history buff" and knew all about the tactics used by various militaries and their branches throughout history, especially modern history.