The Second World War was a catastrophe; this book is one attempt to recover some of what it did to the human mind, and how psychiatry, its practitioners, and its patients tried to comprehend and repair that damage. In his discussion with Abraham, Boder tried to reassure the young man that by doing many interviews with many survivors he would create a ‘mosaic’, that from ‘the little that I get from everyone’ a ‘total can be assembled’. As we have seen, Kimmelmann was deeply sceptical about such claims to comprehensive knowledge. Still, like Boder, I have persisted in my own attempt to assemble what can be assembled, to try and make sense of one part of the wartime experience. By drawing on national, international, and medical archives, personal records, and published and unpublished clinical material, I have sought to recover distinct patient groups and so trace the extraordinary scope of Anglo-American psychiatric theory and practice during the conflict. This wide-ranging approach reveals how combatants and civilians alike grappled with unprecedented violence, and demonstrates not only the consequences for the psy disciplines, but also the profound impact on the many individuals who became the objects of wartime psychological intervention.