7 - Human Experimentation

Many experiments in the camps intended to facilitate the survival of Axis military personnel in the field.  For example, at Dachau, physicians from the German air force and from the German Experimental Institution for Aviation conducted high-altitude experiments on prisoners  to determine the maximum altitude from which crews of damaged aircraft could parachute to safety. Scientists there also carried out so-called freezing experiments on prisoners to find an effective treatment for hypothermia. Prisoners were also used  to test various methods of making seawater drinkable.

A third category of medical experimentation sought to advance the racial and ideological tenets of the Nazi worldview.  The most infamous were the experiments of Josef Mengele on twins of all ages at Auschwitz.  He also directed experiments on Roma (Gypsies), as did Werner Fischer at Sachsenhausen, to determine how different “races" withstood various contagious diseases. The research of August Hirt at Strasbourg University also intended to establish “Jewish racial inferiority."  Additional gruesome experiments meant to further Nazi racial goals included  a series of sterilization experiments, undertaken primarily at Auschwitz and Ravensbrück. Scientists tested a number of methods in an effort to develop an efficient and inexpensive procedure for the mass sterilization of Jews, Roma, and other groups Nazi leaders considered to be racially or genetically undesirable.

Finally the old man, who insisted on anonymity, explained the reason for the vivisection. The Chinese prisoner had been deliberately infected with the plague as part of a research project -- the full horror of which is only now emerging -- to develop plague bombs for use in World War II. After infecting him, the researchers decided to cut him open to see what the disease does to a man's inside. No anesthetic was used, he said, out of concern that it might have an effect on the results.

That research program was one of the great secrets of Japan during and after World War II: a vast project to develop weapons of biological warfare, including plague, anthrax, cholera and a dozen other pathogens. Unit 731 of the Japanese Imperial Army conducted research by experimenting on humans and by “field testing" plague bombs by dropping them on Chinese cities to see whether they could start plague outbreaks. They could.

Scholars and former members of the unit say that at least 3,000 people -- by some accounts several times as many -- were killed in the medical experiments; none survived.

No one knows how many died in the “field testing." It is becoming evident that the Japanese officers in charge of the program hoped to use their weapons against the United States. They proposed using balloon bombs to carry disease to America, and they had a plan in the summer of 1945 to use kamikaze pilots to dump plague-infected fleas on San Diego.

The research was kept secret after the end of the war in part because the United States Army granted immunity from war crimes prosecution to the doctors in exchange for their data. Japanese and American documents show that the United States helped cover up the human experimentation. Instead of putting the ringleaders on trial, it gave them stipends.

Japan's biological weapons program was born in the 1930's, in part because Japanese officials were impressed that germ warfare had been banned by the Geneva Convention of 1925. If it was so awful that it had to be banned under international law, the officers reasoned, it must make a great weapon.

The Japanese Army, which then occupied a large chunk of China, evicted the residents of eight villages near Harbin, in Manchuria, to make way for the headquarters of Unit 731. One advantage of China, from the Japanese point of view, was the availability of research subjects on whom germs could be tested. The subjects were called marutas, or logs, and most were Communist sympathizers or ordinary criminals. The majority were Chinese, but many were Russians, expatriates living in China.

Medical researchers also locked up diseased prisoners with healthy ones, to see how readily various ailments would spread. The doctors locked others inside a pressure chamber to see how much the body can withstand before the eyes pop from their sockets.

Victims were often taken to a proving ground called Anda, where they were tied to stakes and bombarded with test weapons to see how effective the new technologies were. Planes sprayed the zone with a plague culture or dropped bombs with plague-infested fleas to see how many people would die.

The Japanese armed forces were using poison gas in their battles against Chinese troops, and so some of the prisoners were used in developing more lethal gases. One former member of Unit 731 who insisted on anonymity said he was taken on a “field trip" to the proving ground to watch a poison gas experiment.

A group of prisoners were tied to stakes, and then a tank-like contraption that spewed out gas was rolled toward them, he said. But at just that moment, the wind changed and the Japanese observers had to run for their lives without seeing what happened to the victims.

The Japanese Army regularly conducted field tests to see whether biological warfare would work outside the laboratory. Planes dropped plague-infected fleas over Ningbo in eastern China and over Changde in north-central China, and plague outbreaks were later reported.

Japanese troops also dropped cholera and typhoid cultures in wells and ponds, but the results were often counterproductive. In 1942 germ warfare specialists distributed dysentery, cholera and typhoid in Zhejiang Province in China, but Japanese soldiers became ill and 1,700 died of the diseases, scholars say.

Some scholars say that the research was not contrived by mad scientists, and that it was intelligently designed and carried out. The medical findings saved many Japanese lives. For example, Unit 731 proved scientifically that the best treatment for frostbite was not rubbing the limb, which had been the traditional method, but rather immersion in water a bit warmer than 100 degrees -- but never more than 122 degrees.

The cost of this scientific breakthrough was borne by those seized for medical experiments. They were taken outside in freezing weather and left with exposed arms, periodically drenched with water, until a guard decided that frostbite had set in. Testimony from a Japanese officer said this was determined after the “frozen arms, when struck with a short stick, emitted a sound resembling that which a board gives when it is struck."

In 1944, when Japan was nearing defeat, Tokyo's military planners seized on a remarkable way to hit back at the American heartland: they launched huge balloons that rode the prevailing winds to the continental United States. Although the American Government censored reports at the time, some 200 balloons landed in Western states, and bombs carried by the balloons killed a woman in Montana and six people in Oregon. Half a century later, there is evidence that it could have been far worse; some Japanese generals proposed loading the balloons with weapons of biological warfare, to create epidemics of plague or anthrax in the United States. Other army units wanted to send cattle-plague virus to wipe out the American livestock industry or grain smut to wipe out the crops.