The volume provides selected documents and materials for religious education at the upper secondary level and adult education, along with guidance for didactic and methodological exploration. It particularly takes into account new questions and research findings. Detailed literature and media references, as well as a register of persons and places, support its usability in the classroom. The topic is developed in nine chapters: 1. The Catholic Church before 1933 2. 1933 - A year of destiny 3. The Reich Concordat 4. Shepherds in difficult times 5. The Church struggle 6. The Church and the war 7. Resistance 8. The Shoah and the Christians 9. Memory - guilt - reconciliation.