 Pope Benedict XV appointed Pacelli as nuncio to Bavaria on 23 April 1917 , consecrating him as titular Bishop of Sardis and immediately elevating him to archbishop in the Sistine Chapel on 13 May 1917 . After his consecration , Eugenio Pacelli left for Bavaria . As there was no nuncio to Prussia or Germany at the time , Pacelli was , for all practical purposes , the nuncio to all of the German Empire . 
