Subsequent to the transfer of most of the Federal Ministry of Defence´s departments and offices to the Berlin metropolitan area, Diehl Defence opened a liaison office in Berlin-Steglitz.

As a result, Diehl offers a customer-oriented interface for all defence- and security-related institutions. The activities of the office on the premises of Diehl Metal Applications supplement the work of the Diehl Stiftung´s Federal Capital office at Pariser Platz 6a. Consequently the former Diehl office in Bonn was closed at the end of 2014.

The Koblenz office of Diehl Defence Holding serves as a point of contact for defence-related centers and offices in the Cologne/Bonn area.