With World War I an entire system of ideas how wars work collapsed. Suddenly it was no longer mostly soldiers who had to fight. War became an engagement of every day's life. Everybody got involved.
Propaganda therefore changed as well. The campaigns were no longer temporarily and recent but had to be planned for years. Who failed in organizing it or used the wrong keywords failed. Masters of modern propaganda became the British, whereas the Germans failed completely in the beginning.
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Bertolt Brecht (1898-1956), probably was the most influential German dramatist and
theoretician of the theater in the 20th century. During the existence of the Third Reich he fled from Germany to Scandinavia and to the USA, where he tried to go on with his work. In the 1950s he became director of the newly founded Berliner Ensemble, in East Berlin.
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