At midnight on May 14, 1944, the blinking of a flashlight in mountainous, German-occupied Yugoslavia signaled the parachute drop of four American OSS (Office of Strategic Services) officers who were met by a group of Tito's Partisans. One of the OSS officers was Franklin Lindsay. Only with the declassification in the 1980s of wartime American and British archives could he undertake to reconstruct his day-to-day experiences in a war area of constantly...