The Reichskonkordat is a treaty negotiated between the Vatican and the emergent Nazi Germany. It was signed on 20 July 1933 by Cardinal Secretary of State Eugenio Pacelli, who later became Pope Pius X
The signing of the Reichskonkordat on 20 July 1933 in Rome (from left to right: German prelate Ludwig Kaas, German Vice-Chancellor Franz von Papen, Secretary of Extraordinary Ecclesiastical Affairs Giuseppe Pizzardo, Cardinal Secretary of State Eugenio Pacelli, Alfredo Ottaviani, and member of Reichsministerium des Inneren [Home Office] Rudolf Buttmann).