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Nazi human experimentation was a series of medical experiments on prisoners by Nazi Germany in its concentration camps mainly between 1942 and 1945. There were 15,754 documented victims, of various nationalities and age groups, although the true number is believed to be more extensive. Many survived, with only a quarter of documented victims killed. Survivors generally experienced severe permanent injuries.[1] “A Jewish prisoner in a special chamber responds to changing air pressure during high-altitude experiments. For the benefit of the Luftwaffe, conditions simulating those found at 15,000 meters [49,000 ft] in altitude were created in an effort to determine if German pilots might survive at that height.“ At Auschwitz and other camps, under the direction of Eduard Wirths, selected inmates were subjected to various experiments that were designed to help German military personnel in combat situations, develop new weapons, aid in the recovery of military personnel who had been injured, and to advance Nazi racial ideology and eugenics,[2] including the twin experiments of Josef Mengele.[3] Aribert Heim conducted similar medical experiments at Mauthausen.[4] After the war, these crimes were tried at what became known as the Doctors’ Trial, and revulsion at the abuses perpetrated led to the development of the Nuremberg Code of medical ethics. The Nazi physicians in the Doctors’ Trial argued that military necessity justified their experiments and compared their victims to collateral damage from Allied bombings. Experiments The table of contents of a document from the Subsequent Nuremberg trials prosecution includes titles of the sections that document medical experiments revolving around food, seawater, epidemic jaundice, sulfanilamide, blood coagulation and phlegmon.[5] According to the indictments at the subsequent Nuremberg Trials,[6][7] these experiments included the following: Blood coagulation experiments Sigmund Rascher experimented with the effects of Polygal, a substance made from beet and apple pectin, which aided blood clotting. He predicted that the preventive use of Polygal tablets would reduce bleeding from gunshot wounds sustained during combat or surgery. Subjects were given a Polygal tablet, shot through the neck or chest, or had their limbs amputated without anesthesia. Rascher published an article on his experience of using Polygal, without detailing the nature of the human trials, and set up a company staffed by prisoners to manufacture the substance.[8] Bruno Weber was the head of the Hygienic Institution at Block 10 in Auschwitz and injected his subjects with blood types that differed from their own. This caused the blood cells to congeal, and the blood was studied. When the Nazis removed blood from someone, they often entered a major artery, causing the subject to die of major blood loss.[9] Bone, muscle, and nerve transplantation experiments From about September 1942 to about December 1943, experiments were conducted at the Ravensbrück concentration camp for the benefit of the German Armed Forces, to study bone, muscle, and nerve regeneration, and bone transplantation from one person to another.[10] In these experiments, subjects had their bones, muscles and nerves removed without anesthesia. As a result of these operations, many victims suffered intense agony, mutilation, and permanent disability.[10] On 12 August 1946, a survivor named Jadwiga Kamińska[11] gave a deposition about her time at Ravensbrück concentration camp, describing how she was operated on twice. Both operations involved one of her legs, and, although she never describes herself as having any knowledge as to what exactly the procedure was, she explained that both times she was in extreme pain and developed a fever post surgery but was given little to no aftercare. Kamińska describes being told that she had been operated on simply because she was a “young girl and a Polish patriot“. She describes how her leg oozed pus for months after the operations.[12] Prisoners were also experimented on by having their bone marrow injected with bacteria to study the effectiveness of new drugs being developed for use in the battlefields. Those who survived remained permanently disfigured.