Casting new light on a controversial aspect of wartime British foreign policy, this book traces the process by which the British authorities came to offer their backing to Colonel Draza Mihailovic, leader of the non-Communist resistance movement which emerged after the Axis invasion of Yugoslavia in April 1941. It also examines why British confidence in Mihailovic was subsequently eroded, to the point where serious consideration was given to transferring support to his avowed enemies, the Communist-led Partisans.