There has been only 1 case in the history of a large army using chemical weapons...
.. even natzis weren't using chemical stuff but pepper gas (and similar).
.. more than 10 thousand people died then and much more had to live with mutations it caused.
Place: South Vietnam
Year: 1981
Aggressor: USA
The day is remembered as: Yellow Rain
... not enough? remember atomic bombings of Hiroshima and Nagasaki.. :/
Keep Calm
and
Shoot Porn 