Before The Cradle Will Rock, before War of the Worlds, before Citizen Kane--there was Marching Song. At the age of 25 Orson Welles co-wrote, directed, and starred in Citizen Kane, widely regarded as one of the greatest films of all time. But this was not the first achievement in the young artist's career. A few years earlier he terrorized America with his radio broadcast of War of the Worlds. And even before he conquered the airwaves, Welles...