International audience/// This article presents my findings at the beginning of my research on the Catholic Congresses during the Weimar Republic. I argue that the speakers' nationalist ideas were cloaked by their claim for a peace under papal supervision. The lack of mobilization for concrete peace showed that the papal message for peace was only used in order to allow Germany to recover its former place among nations but not to establish new moral values which could provide a new basis for international relations. /// Dieser Artikel basiert auf meiner Abschlussarbeit nach dem Ende des vierten Studienjahres (mémoire de maîtrise). Er untersucht, wie die deutschen Katholiken den Frieden in ihrem durch Revolutionen zerrissenen Land und in ein...