Drachenbronn Air Base (Base Aérienne 901 Drachenbronn) of the French Air Force is located in the community of Drachenbronn-Birlenbach in the Bas-Rhin département. It houses the Centre de détection et de contrôle 05/901. The base uses the underground facilities of the former Ouvrage Hochwald of the Maginot Line. Its mission is the surveillance of aviation movements in eastern France.