The Military Counterintelligence Service (Militärischer Abschirmdienst; MAD) is one of the three federal intelligence agencies that is responsible for military counterintelligence. MAD works closely to the Bundesnachrichtendienst (Federal Intelligence Service, BND), which is the foreign intelligence agency, and the Bundesamt für Verfassungsschutz (Federal Office for the Protection of the Constitution, BfV) which is the domestic civilian intelligence agency. MAD headquarters are located in Cologne, but also have twelve groups throughout Germany.
In 1983 MAD instigated an internal surveillance operation on the four-star general Günter Kießling. The general was working with NATO (Commander of NATO land forces and Deputy Supreme Allied Commander Europe). The security risk was based on dubious allegations of homosexuality.
In the 70s MAD authorised the secret home surveillance of Germany’s own minister of defence Georg Leber without his knowledge. His secretary was suspected of espionage for the East German Ministerium für Staatssicherheit (Ministry of State Security or Stasi). The suspicions were found to be false. Leber retired on 16th Feb 1978 taking sole responsibility for the surveillance.