In 1971, he joined the Unit for Germany and Berlin in the Bonn headquarters, where he eventually became Secretary to the closest advisors of Foreign Minister Hans-Dietrich Genscher.
Foreign Minister Hans-Dietrich Genscher, who had recently been released from hospital, wrote in his memoirs that he received a phone call from Mrs. Hilde Braunmühl, who said to him: "My husband has been shot."
Near his residence in Bonn, Buchholzstraße 39, a commemorative plate was mounted in 1987 with the following text: "Here died on 10.10.1986 Dr. Gerold Braunmühl, Political Director of the Foreign Office.
Soon thereafter, Gerold Braunmühl Auditorium was dedicated in the (now defunct) training and education center of the Foreign Ministry (diplomatic academy) in Bonn.
The Federal Foreign Office commemorates him through a memorial wall in the old building of the construction on the Werder market in Berlin for members who were killed in the line of duty.