Heroes and villains, idealists and mercenaries, freedom fighters and religious fanatics. Foreign fighters tend to defy easy classification. Good and bad images of the foreign combatant epitomize different conceptions of freedom and are used to characterize the rightness or wrongness of this actor in civil wars. The book traces the history of these figures and their afterlife. It does so through an interdisciplinary methodology employing law, history, and psychoanalytical theory, showing how different images of the foreign combatant are utilized to proscribe or endorse foreign fighters in different historical moments. By linking the Spanish, Angolan, and Syrian civil wars, the book demonstrates how these figures function as a precedent for later periods and how their heritage keeps haunting the imaginary of legal actors in the present.