This book offers the first in-depth intellectual and cultural history of British subversive propaganda during the Second World War. Focussing on the Political Warfare Executive (PWE), it tells the story of British efforts to undermine German morale and promote resistance against Nazi hegemony. Staffed by civil servants, journalists, academics and anti-fascist European exiles, PWE oversaw the BBC European Service alongside more than forty unique clandestine radio stations; they maintained a prolific outpouring of subversive leaflets and other printed propaganda; and they trained secret agents in psychological warfare. British policy during the occupation of Germany stemmed in part from the wartime insights and experiences of these propagandists.