During the Nazi era, about three million Jews - half the victims of the Holocaust - were deported from the German Reich, the occupied territories, as well as Nazi-allied countries, and sent to ghettos, camps, and extermination centers. The police and the SS also deported tens of thousands of Sinti and Roma, mainly to the Auschwitz concentration and extermination camp, where most of them were killed. Deportations were central to National Socialist persecution and extermination. In November 2020, an international conference organized by the Arolsen Archives focused on the various historical sources, their research potential, and (digital) methods of cataloging them. It also explored new (systematizing and comparative) approaches in historical research. This volume features over 20 contributions by scholars from different countries and with a variety of perspectives and questions. The main geographical focus is on deportations from the German Reich and German-occupied Southeastern Europe.

After World War II, tracing and documenting Nazi victims emerged against the background of millions of missing persons and early compensation proceedings. This was a process in which the Allies, international aid organizations, and survivors themselves took part. New archives, documentation centers and tracing bureaus were founded amid the increasing Cold War divide. They gathered documents on Nazi persecution and structured them in specialized collections to provide information on individual fates and their grave repercussions: the loss of relatives, the search for a new home, physical or mental injuries, existential problems, social support and recognition, but also continued exclusion or discrimination. By doing so, institutions involved in this work were inevitably confronted with contentious issues-such as varying political mandates, neutrality vs. solidarity with those formerly persecuted, data protection vs. public interest, and many more. Over time, tracing bureaus and archives changed methods and policies and even expanded their activities, using historical documents for both research and public remembrance. This is the first publication to explore this multifaceted history of tracing and documenting past and present.