 At the same time, from 10 April 1934, he was employed as an auxiliary officer in the 5th department, in the section "Foreign Air Powers" of the Ministry of Aviation () (RLM) in Berlin.As an adjutant of the head of maritime aviation intelligence, he was responsible for evaluating the foreign literature and press on the subject of air armament.He analysed tactics, organisation, training and technology and to do this he studied foreign magazines, lectures, photo collections and journals.