New York City-born, Braun made his film debut in 1933 with Der Jäger aus Kurpfalz.
His final film was Kleine Mädchen - große Sorgen (1941), opposite actress Hannelore Schroth.
Unlike his father who was an early sympathizer with the Nazis and a member of the anti-Semitic Kampfbund für deutsche Kultur,[2] Hermann Braun held an anti-Nazi stance and retired from (or was forced out of) the Nazi-controlled motion picture industry.
Drafted into the German military, he saw action on the Russian front during World War II.
However, the German War Graves Commission memorial for Braun states that he rose to the rank of Lieutenant and died on January 20, 1945.