Hermann Friedrich Graebe

Herman Friedrich Graebe or Gräbe, (June 19, 1900 – April 17, 1986) was a German manager and engineer in charge of a German building firm in Ukraine, who witnessed mass executions of Jews on October 5 1942 by Nazis. Following the war he wrote a famous and terrifying testimony.

He later provided vital testimony in the Einsatzgruppen Trial, one of the Subsequent Nuremberg Trials, invoking bitter persecution from many of his countrymen. To escape the hostility, Graebe moved his family to San Francisco in 1948, where he lived until his death in 1986. Hermann Graebe was honored as a 'Righteous Among the Nations' by the Israelis.