They also plotted to attack America’s west coast with biological agents. Send infected fleas (in clay pots) into cities to spread disease via vermin.
“In 1940, Major General Ishii sent a train carrying 70 kilograms of typhus bacterium, 50 kilograms of cholera germs, and 5 kilograms of plague-infected fleas to the city of Hangzhou...the germs were dumped into ponds and reservoirs and spread by aerial spraying, contaminating all life in fields of wheat and millet during the harvest.
....[N}ear...the small town of Quzhou, a Japanese plane dropped plague-infected fleas in October 1940. The first victims died a few days later. By 1948, more than 5,000 people had perished.”