After the United States entered the war against Germany on December 11, 1941, Kaltenbach's broadcasts aimed at undermining U.S. morale and the national will to prosecute a protracted war with Germany [REF].
Kaltenbach also broadcast with another American collaborator, Max Koischwitz, as Jim of 'Jim and Johnny', a humorous dialogue program in which the title characters traded propaganda-laden wisecracks [REF].