Hermann Robert Richard Eugen Kasack was a German writer. He is best known for his novel Die Stadt hinter dem Strom. Kasack was a pioneer of using the medium broadcast for literature. He published radio plays also under the pen names Hermann Wilhelm and Hermann Merten.

Die Aktion was a German literary and political magazine, edited by Franz Pfemfert and published between 1911 and 1932 in Berlin-Wilmersdorf; it promoted literary Expressionism and stood for left-wing politics. To begin with, Die Aktion was published weekly, after 1919 fortnightly, and only sporadically beginning from 1926.