A comprehensive exploration of postcards used as propaganda on all sides of the major military and political conflicts of the twentieth century, including World Wars I and II. A Russian Socialist worker raises the red flag. Adoring crowds greet Hitler and Mussolini. Uncle Sam orders Americans to enlist. These images and many more circulated by the millions on postcards intended to change minds and inspire actions around the time of the two World Wars. Whether produced by government propaganda bureaus, opportunistic publishers, aid organizations, or resistance movements, postcards conveyed their messages with striking graphics, pithy slogans, and biting caricatures - and in a uniquely personal format.