Yes, they droped fleas infected with the Bubonic Plague on china from planes.
The Infamous Unit 731 of the Japanese Imperial Army were the ones responsible for Biological Weapons use and experimentation during World War 2. The fleas mentioned above were dropped in ceramic bombs, and estimated to have killed around 400,000.
I believe Japan surrendered because we threatened them with nuclear weapons.
The U.S. used atomic weapons on the cities of Hiroshima and Nagasaki which effectively ended the Second World War .
Nuclear weapons have only been used in combat on Japan.
The use of these weapon brought about peace in the East against Japan and was the conclusion of hostilities in WW2 .
To some extent some tunnels were used; but the war in China was not known for that use. Trenches were also used; but again, the war in China was not known for that. WW1 was known as a "trench war", as well as alot of tunnelling.
Dropped on Japan to end the war.
I believe Japan surrendered because we threatened them with nuclear weapons.
to use against Japan in world war II
Nuclear weapons have only been used in anger in the Second World War (WW2) - they were used against the Japan to bring the war to an end.
Nuclear weapons, Biological Weapons, Chemical Weapons.
In 1945 two atomic weapons were used against Japan .
At end of world war two, two were dropped in Japan, which ended the japan - America conflict
After Japan attacked the U.s.A ,it got fully involved in world war 2 , and wanted to crush Japan and its mighty navy as well.
The U.S. used atomic weapons on the cities of Hiroshima and Nagasaki which effectively ended the Second World War .
Russia has nuclear weapons and a modern army. Japan has put the military aside since World War II.
He wanted to end the war as quickly as possible.
The US wanted these weapons to be used against Germany, before they could use them against the Allies. However Germany was defeated with conventional weapons before these weapons were ready. So the US decided to use them on Japan as soon as they were ready, to end the war without having to invade Japan.