During the Second World War few countries provided a more difficult challenge for Gen. "Wild Bill" Donovan's Office of Strategic Services than did Yugoslavia. Working with its British counterpart, OSS sought to sustain the Yugoslav resistance in its struggle against the Axis occupiers. Unfortunately, OSS personnel, who first began entering the country in the late summer of 1943, found themselves caught up in a ruthless civil war between Draza Mihailovich's Nationalists or Chetniks and Josip-Broz Tito's Partisans.
OSS enjoyed some notable successes, ferrying badly needed supplies to Tito...