 However, the fall of the Uprising put an end to that duty.Korboński managed to leave Warsaw as a civilian and continued his duties in hiding.In March 1945, after the NKVD arrested Jan Stanisław Jankowski, Korboński became the last Government Delegate at Home and held that post until his arrest by the NKVD in June of the same year, during which time he worked to rebuild Government Delegacy.