Trials of war criminals before the Nuernberg military tribunals under control council law no. 10, volume I

by Various

A. High-Altitude Experiments

The experiments known as “high-altitude” or “low-pressure” experiments were carried out at the Dachau concentration camp in 1942. According to the proof, the original proposal that such experiments be carried out on human beings originated in the spring of 1941 with a Dr. Sigmund Rascher. Rascher was at that time a captain in the medical service of the German Air Force, and also held officer rank in the SS. He is believed now to be dead.

The origin of the idea is revealed in a letter which Rascher wrote to Himmler in May 1941 at which time Rascher was taking a course in aviation medicine at a German Air Force headquarters in Munich. According to the letter, this course included researches into high-altitude flying and

“considerable regret was expressed at the fact that no tests with human material had yet been possible for us, as such experiments are very dangerous and nobody volunteers for them.” (1602-PS.)

Rascher, in this letter, went on to ask Himmler to put human subjects at his disposal and baldly stated that the experiments might result in death to the subjects but that the tests theretofore made with monkeys had not been satisfactory.

Rascher’s letter was answered by Himmler’s adjutant, the defendant, Rudolf Brandt, who informed Rascher that—

“* * * Prisoners will, of course, gladly be made available for the high-flight researches.” (1582-PS.)

Subsequently Rascher wrote directly to Rudolf Brandt asking for permission to carry out the experiments at the Dachau concentration camp, and he mentioned that the German Air Force had provided “a movable pressure chamber” in which the experiments might be made. Plans for carrying out the experiments were developed at a conference late in 1941, or early in 1942, attended by Dr. Rascher and by the defendants Weltz, Romberg, and Ruff, all of whom were members of the German Air Force Medical Service. The tests themselves were carried out in the spring and summer of 1942, using the pressure chamber which the German Air Force had provided. The victims were locked in the low-pressure chamber, which was an airtight ball-like compartment, and then the pressure in the chamber was altered to simulate the atmospheric conditions prevailing at extremely high altitudes. The pressure in the chamber could be varied with great rapidity, which permitted the defendants to duplicate the atmospheric conditions which an aviator might encounter in falling great distances through space without a parachute and without oxygen.

The reports, conclusions, and comments on these experiments, which were introduced here and carefully recorded, demonstrate complete disregard for human life and callousness to suffering and pain. These documents reveal at one and the same time the medical results of the experiments, and the degradation of the physicians who performed them. The first report by Rascher was made in April 1942, and contains a description of the effect of the low-pressure chamber on a 37-year-old Jew. (1971-A-PS.) I quote:

“The third experiment of this type took such an extraordinary course that I called an SS physician of the camp as witness, since I had worked on these experiments all by myself. It was a continuous experiment without oxygen at a height of 12 kilometers conducted on a 37-year-old Jew in good general condition. Breathing continued up to 30 minutes. After 4 minutes the experimental subject began to perspire and wiggle his head, after 5 minutes cramps occurred, between 6 and 10 minutes breathing increased in speed and the experimental subject became unconscious; from 11 to 30 minutes breathing slowed down to three breaths per minute, finally stopping altogether.

“Severest cyanosis developed in between and foam appeared at the mouth.

“At 5 minute intervals electrocardiograms from three leads were written. After breathing had stopped Ekg (electrocardiogram) was continuously written until the action of the heart had come to a complete standstill. About ½ hour after breathing had stopped, dissection was started.”

Rascher’s report also contains the following record of the “autopsy”:

“When the cavity of the chest was opened the pericardium was filled tightly (heart tamponade). Upon opening of the pericardium, 80 cc. of clear yellowish liquid gushed forth. The moment the tamponade had stopped, the right auricle of the heart began to beat heavily, at first at the rate of 60 actions per minute, then progressively slower. Twenty minutes after the pericardium had been opened, the right auricle was opened by puncturing it. For about 15 minutes, a thin stream of blood spurted forth. Thereafter, clogging of the puncture wound in the auricle by coagulation of the blood and renewed acceleration of the action of the right auricle occurred.

“One hour after breathing had stopped, the spinal marrow was completely severed and the brain removed. Thereupon, the action of the auricle of the heart stopped for 40 seconds. It then renewed its action, coming to a complete standstill 8 minutes later. A heavy subarachnoid oedema was found in the brain. In the veins and arteries of the brain, a considerable quantity of air was discovered. Furthermore, the blood vessels in the heart and liver were enormously obstructed by embolism.” (1971-A-PS.)

After seeing this report Himmler ironically ordered that if a subject should be brought back to life after enduring such an experiment, he should be “pardoned” to life imprisonment in a concentration camp. Rascher’s reply to this letter, dated 20 October 1942, reveals that up to the time the victims of these experiments had all been Poles and Russians, that some of them had been condemned to death, and Rascher inquired whether Himmler’s benign mercy extended to Poles and Russians. (1971-D-PS.) A teleptyped reply from the defendant, Rudolf Brandt, confirmed Rascher’s belief that Poles and Russians were beyond the pale and should be given no amnesty of any kind. (1971-E-PS.)

The utter brutality of the crimes committed in conducting this series of experiments is reflected in all the documents. A report written in May 1942 reflects that certain of these tests were carried out on persons described therein as “Jewish professional criminals.” In fact, these Jews had been condemned for what the Nazis called “Rassenschande,” which literally means “racial shame.” The crime consisted of marriage or intercourse between Aryans and non-Aryans. The murder and torture of these unfortunate Jews is eloquently reflected in the following report:

“Some of the experimental subjects died during a continued high-altitude experiment; for instance, after one-half hour at a height of 12 kilometers. After the skull had been opened under water, an ample amount of air embolism was found in the brain vessels and, in part, free air in the brain ventricles.

“In order to find out whether the severe psychic and physical effects, as mentioned under No. 3, are due to the formation of embolism, the following was done: After relative recuperation from such a parachute descending test had taken place, however before regaining consciousness, some experimental subjects were kept under water until they died. When the skull and cavities of the breast and of the abdomen were opened under water, an enormous amount of air embolism was found in the vessels of the brain, the coronary vessels, and the vessels of the liver and the intestines.” (NO-220.)

The victims who did not die in the course of such experiments, surely wished that they had. A long report written in July 1942 by Rascher, and by the defendants Ruff and Romberg, describes an experiment on a former delicatessen clerk, who was given an oxygen mask and raised in the chamber to an atmospheric elevation of over 47,000 feet, at which point the mask was removed and a parachute descent was simulated. The report describes the victim’s reactions—“spasmodic convulsions,” “agonal convulsive breathing,” “clonic convulsions, groaning,” “yells aloud,” “convulses arms and legs,” “grimaces, bites his tongue,” “does not respond to speech,” “gives the impression of someone who is completely out of his mind.” (NO-402.)

The evidence which we will produce will establish that the defendants Ruff and Romberg personally participated with Rascher in experiments resulting in death and torture; that the defendant Sievers watched the experiments for an entire day and made an oral report to Himmler on his observations; that the defendant Rudolf Brandt was the agent of Himmler in providing the human subjects for these experiments and in making many other facilities available to Rascher and rendering him general assistance; and that the defendant Weltz, in his official capacity, repeatedly insisted on supervision over and full responsibility and credit for the experiments. The higher authorities of both the German Air Force and the SS were fully informed concerning what was going on. Extensive correspondence will be introduced, for example, concerning the availability of the low-pressure chamber which the German Air Force furnished at Dachau, and concerning the availability of Rascher, who was an officer in the Air Force Medical Service, to conduct the experiments. Knowledge of, participation in, and responsibility for these atrocious crimes on the part of the defendants here charged will be clearly shown by the evidence.