Called for military service in World War I, he carried out a hunger strike to secure early release, and in 1919 he moved to Berlin where he joined the Communist Party of Germany and the "November" group.
Rudolf Nureyev | Rudolf Steiner | Rudolf Virchow | Rudolf Hess | Rudolf II, Holy Roman Emperor | Rudolf Kempe | Rudolf Hilferding | Rudolf | Rudolf Schwarz | Rudolf Haag | Rudolf, Crown Prince of Austria | Rudolf Schwarz (conductor) | Rudolf Platte | Rudolf Nebel | Rudolf Carnap | Rudolf Thurneysen | Rudolf Stingel | Rudolf Serkin | Rudolf II | Rudolf Bultmann | Rudolf Baumgartner | Rudolf von Jhering | Rudolf Scharping | Rudolf Otto | Rudolf (musical) | Rudolf Kreitlein | Rudolf III, Duke of Saxe-Wittenberg | Rudolf Hruska | Rudolf Flesch | Rudolf Erich Raspe |
Left-wing artists had already formed groups, such as the November Group, Dadaist groups, or from 1924 to 1926, the Red Group, with which George Grosz, John Heartfield and Rudolf Schlichter were involved.