<P> In response to a typhus epidemic in the women's camp, Mengele cleared one block of 600 Jewish women and sent them to the gas chamber . The building was then cleaned and disinfected, and the occupants of a neighboring block were bathed, de-loused, and given new clothing before being moved into the clean block . The process was repeated until all the barracks were disinfected . Similar disinfections were used for later epidemics of scarlet fever and other diseases, but with all the sick prisoners being sent to the gas chambers . For his efforts, Mengele was awarded the War Merit Cross (Second Class with Swords) and was promoted in 1944 to First Physician of the Birkenau subcamp . </P> <P> Mengele used Auschwitz as an opportunity to continue his anthropological studies and research on heredity, using inmates for human experimentation . The experiments had no regard for the health, safety, or physical and emotional suffering of the victims . He was particularly interested in identical twins, people with heterochromia iridum (eyes of two different colours), dwarfs, and people with physical abnormalities . A grant was provided by the Deutsche Forschungsgemeinschaft, applied for by von Verschuer, who received regular reports and shipments of specimens from Mengele . The grant was used to build a pathology laboratory attached to Crematorium II at Auschwitz II - Birkenau . Dr. Miklós Nyiszli, a Hungarian Jewish pathologist who arrived in Auschwitz on 29 May 1944, performed dissections and prepared specimens for shipment in this laboratory . Mengele's twin research was in part intended to prove the supremacy of heredity over environment and thus bolster the Nazi premise of the superiority of the Aryan race . Nyiszli and others report that the twins studies may also have been motivated by a desire to improve the reproduction rate of the German race by improving the chances of racially desirable people having twins . </P> <P> Mengele's research subjects were better fed and housed than other prisoners and temporarily safe from the gas chambers . He established a kindergarten for children that were the subjects of experiments, along with all Romani children under the age of six . The facility provided better food and living conditions than other areas of the camp, and even included a playground . When visiting his child subjects, he introduced himself as "Uncle Mengele" and offered them sweets . But he was also personally responsible for the deaths of an unknown number of victims that he killed via lethal injection, shootings, beatings, and through selections and deadly experiments . Lifton describes Mengele as sadistic, lacking empathy, and extremely antisemitic, believing the Jews should be eliminated entirely as an inferior and dangerous race . Mengele's son Rolf said his father later showed no remorse for his wartime activities . </P> <P> A former Auschwitz prisoner doctor said: </P>

Who was the angel of death and what did he do