Then,
              during its first decade of existence, German cinema led a sideshow
              sort of existence; it was nothing more than cheap entertainment
              that in fact often was controlled by sideshow companies.
              Only just prior to
              World War I did the artistic possibilities of this new media begin
              to be exploited. The first significant feature length films
              appeared in 1913, mainly reaching back into stage theater
              traditions.
              In particular, Max
              Reinhardt, Director of the Deutsche Theater (and also of the
              acting school where Max Ehrlich was studying at the time) began to
              apply his wizardry to directing film productions. Other great film
              directors during this early period included Paul Wegener and Joe
              May.
              Not before long,
              the first German movie stars also were "born", many of
              whom -- over the years -- would work with Max Ehrlich. They
              included  Henny Porten, Asta Nielsen, Pola Negri (Polish
              born, but after 1917 present largely in German films), Emil
              Jannings, Werner Krauß and Conrad Veidt just to name a few
              In 1917, with the
              support of the German government, the Universum Film AG (UFA) was
              founded, and until 1945 would remain the main production company
              in Germany (see below).
              After World War I,
              within the relative freedom of the Weimar Republic, cinema both
              grew and developed, taking on numerous new forms. 
              Ernest Lubitsch
              made historical and operetta films. Fritz Lang also presented his
              first productions, as did Friedrich Wilhelm Murnau.
              Soon,
              expressionist silent movies became the main means of artistic
              expression in the film media during the 1920s, 
              But Fritz Lang
              quickly freed himself from these expressionist influences, going
              his own way into new cinematographic directions. These came to be
              characterized as "Neue Sachlichkeit" (New Concreteness)
              and "Proletarischer Film" (Proletaritariat Cinema),
              terms taken over from the world of painting (Dix, Beckmann, Grosz)
              and giving rise to a more-or-less realistic vision of the world
              and understanding of cinema.
              The "Neuesachlichkeit"
              (New Concreteness) trend perhaps found it's best expression in the
              area of documentary films, whilst, at the end of the1920s... early
              1930s, "Proletarische Filme" (Prolitarian Films)
              emerged, both spiritually and organizationally attached to the
              labor movement.
              Meanwhile,
              by the early 1930s, the UFA, under the direction of Alfred
              Hugenberg, had grown into a powerful business concern.
              But, in 1932, a
              new management team took over and the UFA came under the control
              of the "upcoming" Fascist regime. From this point
              onward, until it's demise following World War II, the UFA became
              one of the most powerful medias to be misused by the Nazis.