 His coronation took place on 12 March 1939 . Upon being elected pope he was also formally the Grand Master of the Equestrian Order of the Holy Sepulchre of Jerusalem , prefect of the Supreme Sacred Congregation of the Holy Office , prefect of the Sacred Congregation for the Oriental Churches and prefect of the Sacred <unk> Congregation . There was however a Cardinal @-@ Secretary to run these bodies on a day @-@ to @-@ day basis . 
