On 30 August 1939, two days before the start of the Second World War, Berndt was appointed Head of Broadcasting of the Propaganda Ministry (Division III). In early November 1939 Goebbels learned of Berndt's conflicts with the Reich Post Office, and rejected him as a negotiator for the Propaganda Ministry. In February 1940, Berndt reported that he had fulfilled his task of adapting the German broadcasting system to the requirements of war and war propaganda.