Since the Nuremberg trials following World War II, there has been considerable debate about the nature and effects of war crimes with regard both to the Nazis and to modern-day perpetrators. What constitutes a “war crime,” and how has the concept changed over time? How do victors and vanquished deal with crimes that have universal as well as national dimensions? How is the historical reality of war crimes related to their judicial treatment? How are perpetrators portrayed during investigations and trials? These timely and provocative essays make use of newly available archival sources and a wide range of case studies to provide in-depth analyses of war crimes within a broad historical framework. The essays are organized into four sections: the history of war-crime trials from Weimar Germany to just after World War II; the sometimes diverging Allied efforts to come to terms with the Nazi concentration camp system; the ability of postwar society to confront war crimes of the past; and the legacy of war-crime trials in the twenty-first century. Atrocities on Trial illuminates a dark and timely subject and helps us to understand the ongoing struggle to hold accountable those who perpetrate crimes against humanity.