Eduard Krebsbach

Eduard Krebsbach (8 August 1894 – 28 May 1947) was a former German physician and SS doctor in the Nazi concentration camp in Mauthausen from July 1941 to August 1943. He was executed for crimes against humanity committed at the Mauthausen camp.
Concentration camp career.
In the autumn of 1941, Krebsbach became Standortarzt (garrison doctor) of Mauthausen concentration camp, tasked with supervising medical care and all medical personnel of the camp. He was responsible for initiating mass killing by lethal injection to the heart on handicapped and sick prisoners. Under his supervision approximately 900 Russian, Polish and Czech prisoners were murdered by lethal injections of gasoline. Because of this inmates nicknamed him 'Dr Spritzbach' (Dr Injection). Krebsbach was also responsible for the construction of a gas chamber in the basement of the hospital in the Mauthausen camp.
Krebsbach often inspected the prisoners and conducted selections for execution. A former inmate recalled Krebsbach's actions during such an inspection: 
Krebsbach was transferred to the Kaiserwald concentration camp in Latvia during the autumn of 1943, as it is believed he shot Josef Breitenfellner in his home. Breitenfellner was a German soldier from Langenstein on vacation when he and his friends awoke Krebsbach from his sleep on 22 May 1943. Here he conducted selections by forcing the prisoners to perform physical exercises to check their strength and then identifying the two thousand weakest to be killed.
Following the camp's closure, Krebsbach resumed a career as “Epidemic Inspector for Latvia, Estonia and Lithuania”. Soon after he transferred to the regular army as a senior staff doctor, serving until late 1944. However this was short lived and at the end of 1944 he left the army and worked once again as a company doctor in a spinning mill in Kassel.
Dachau War Crime Trial.
Following the end of World War II he was arrested and given the death penalty during the Dachau trials conducted by the US military on 13 May 1946 and was executed by hanging on 28 May 1947 at Landsberg Prison in Landsberg am Lech.
The following is from the court record of the Dachau trials (quoted in Hans Maršálek, "Die Geschichte des Konzentrationslagers Mauthausen", p. 174):