Unit 100
Organization. Unit 100 had six sections. Mission. The main purpose of Unit 100 was to conduct research about diseases originating from animals. As most armies were still heavily dependent on horses, the Imperial Japanese Army hoped to find ways to kill them and therefore to weaken military power. Furthermore, they hoped to spread disease via animal carriers. To this end, former members claim that experiments were also conducted with human beings. In practice, Unit 731 was the group tasked with developing biological weapons against humans. Although smaller than Unit 731, Unit 100 was still a large organization. Its  annual bacteria production capacity was projected to reach 1,000 kg of anthrax, 500 kg of glanders, and 100 kg of red rust (fungus). The goal was never reached, due to equipment shortages. Senior Sgt. Kazuo Mitomo described some of Unit 100's human experiments: Unit chief Yujiro Wakamatsu ordered Hirazakura to purchase hundreds of cattle and put them to pasture along the Siberian border north-east of Hailar, ready to be infected by airborne dispersion. It was hoped that in the event of a Soviet invasion these infected livestock would mingle with local herds to cause epidemics and to destroy  food supplies. Unit 100 staff poisoned and drugged Russians, Chinese and Koreans with heroin, castor oil, tobacco and other substances for weeks at a time. Some died during the experimentation. When survivors were determined to no longer be useful for experimentation and were complaining of illness, staff told them they would receive a shot of medicine, but instead executed them with potassium cyanide injections. Executions were also carried out by gunshots. Capabilities. Unit 100 could produce 1,000 kilograms of anthrax germs, 500 kilograms of glanders germs, and 100 kilograms of redrust germs in a single year. Biological warfare agents. The  following potential agents were tested: