Deutsches Theater
Poschmann was born in Bochum in 1922. She trained in Berlin from 1940 to 1942 making her debut in 1943. After the war, the eastern part of Berlin was part of a larger Soviet occupation zone. The Deutsches Theater reopened in September 1945 under the leadership of Gustav von Wangenheim, and she was a member of the company. She appeared as "Recha" with Gerda Müller in a production of Lessing's "Nathan the Wise" at the Deutsches Theater in Berlin.