Dr. Horst Schumann (first lieutenant of the air force and SS-Sturmbannfčhrer), was born in 1906 as son of a physician in Halle/Saale. he entered the NSDAP in 1930 under the number 190.002 and two years later, joined the SA. In 1933, Dr. med. in Halle, was employed in the Public Health Office in Halle since 1934 and recruited to the air force as physician in 1939, after the outbreak of the war.

Viktor Brack, director of the department "Aktion T 4" (Euthanasia of insane people, of chronically ill people, Jews and the so-called "Asoziale") asked him to participate within the euthanasia program. After a short time of reflection, Schumann agreed. In January 1940, he became head of the euthanasia-institute Grafeneck in Wurttemberg, where people were killed by motor exhaust fumes. Half a year later, he became director of the institute Sonnenstein/Pirna in Saxonia.

After Hitler had officially ordered the extermination of "life unworthy of life" which was covered by the abbreviation "14 f 13" and also included camp inmates, Schumann belonged to a commission of doctors who transferred weak and sick prisoners in Auschwitz, Buchenwald, Dachau, Flossenbčrg, Grož-Rosen, Mauthausen, Neuengamme and Niederhangen concentration camps to the euthanasia killing centers.

On July 28, 1941, Schumann came to Auschwitz for the first time, where he selected 575 prisoners who were deported and killed in the killing center Sonnenstein/Pirna. The action "14 f 13" went on in August 1941; SS-guards injected phenole poison directly into the hearts of the sick inmates. One and a half years later, Schumann went back to Auschwitz, in order to test "cheap and efficient" mass-sterilisation of men and women with X-ray. Almost nobody survived, his victims died from inner injuries, from burnings, from additional "operations" - removal of ovaries and testicles, from exhaustion and the psychical shock. Schumann left Auschwitz in 1944. In October 1945, he suddenly appeared in Gladbeck where we was appointed urban sports-doctor.

He opened his own consulting practice in 1949 with a refugee credit (!) and was only recognized as a war-criminal in 1951. Schumann could flee. According to his statement, he then worked as a ship-doctor before settling in the Sudan in 1955. Four years later, he fled again via Nigeria and Libya to Ghana. Only in 1966, Schumann was delivered to the German Federal Republic, where the trial against him was opened in September 1970. But already in April 1971, the trial against him was interrupted because the defendant suffered from high blood-pressure. Without any public interest, Schumann was released from prison on July 29, 1972. He spent the rest of his life in Frankfourt and died on May 5, 1983, eleven years after he had been released. Medical treatment had saved him from condemnation and imprisonment.