The present study deals with the Imperial Concordat of July 1933 in the context of the Vatican concordat policy towards Germany, which, moreover, is still in force. It analyses the course of negotiations which represented the culmination of the concordat policy of the Holy See towards Germany which found the Catholic Church in exceptionally good shape. The study is based on materials from the Vatican Archives (especially the Congregation for Extraordinary Ecclesiastical Affairs of the Historical Archives of the Holy See), published sources, editions and periodicals, especially the Vatican newspaper L’Osservatore Romano which confronts foreign literature, especially of German provenance.