The study is located at the interface of text linguistics, sociolinguistics, pragmatic stylistics and system theory. It is the first to analyse what is known as the Red Army Faction's "Info" system – the written communication used by the members during their imprisonment between 1973 and 1977 – on the basis of a newly developed system-theoretical approach to describing group stylistic phenomena. Individual analyses of original documents are used to discern the structure of the group style; working from this, sense attributions are formulated.