clipped from: www.dailymail.co.uk A war strategy to shower enemy troops with tens of thousands of poisoned darts that could bring death in minutes.
Although the 1925 Geneva Protocol banned biological warfare it would not have precluded the use of chemical weapons like the darts.
Britain considered attacking Tokyo with chemical weapons more than a year before America dropped an atomic bomb on Japan.
The papers looked at how the climate in Tokyo and its narrow streets would affect the flow of gas. Scientists were considering the use of phosgene, mustard gas and incendiaries.
Cheese contaminated with mustard gas was fed to volunteers in government experiments during the Second World War.
At each event, which drew up to 1,000 people, food was laid out on the floor of a gas chamber which was sealed and filled with mustard gas. This was later decontaminated and fed to the public 'without any harmful effects'.