Members of the Red Army Faction Socialist Patients' Collective (SPK) and Movement 2 June (J2M). The SPK, the leftist, 'therapy-through-violence' group, dissolved in 1971, and those members who had turned militant forged links and joined with the Baader-Meinhof Gang. Brigitte Mohnhaupt, Klaus Jünschke Carmen Roll, and Gerhard Müller had already joined as part of the first generation of the RAF but originally started in SPK. Siegfried Hausner (24 January 1952 – 5 May 1975) was a leading member of the SPK especially involved with explosives. He took part in a bombing of the Axel Springer Verlag in 1971 and was the leader of the West German
Army group both German and Italian corps. A separate and distinct German military unit (""), which is also translated to English as "army group", describes more temporary groupings of army-sized units, where the command of one of its composite units formed the grouping's command structure. These groupings were usually named after the commander of the unit in question, for example Armeegruppe Weichs, part of Army Group B during Operation Blau in 1942. During World War II there were six general armies: In April 1945, the "Boei So-Shireibu" (translated as "general defense command" or "home defense general headquarters" and similar names) was split