Vernichtungslager Belzec
Wilhelm Hermann Pfannenstiel (12 February 1890 – 1 November 1982) was a German physician, member of the Nazi Party from 1933, (NSDAP 2828629), and SS officer from 1934, (SS-Standartenführer, SS-No. 273083). In August 1942 he witnessed, together with Kurt Gerstein, the gassing of Jews in Bełżec extermination camp.