Green Building

Whoops.  Sorry to you and @gurn.  I had a brain fart while posting about WW2 mustard gas.  I accidentally typed WW2 instead of WW1.  What I was trying to infer without actually pointing it out, was that the Allied powers had already committed a war crime by having and producing the gas 20 years after it was banned by treaty.  They were fully ready and prepared to use it on the Axis soldiers as well.

Imagine if Germany had used it to stop the soldiers on Normandy on D-Day when they began to break the German lines.  The US would have had to nuke Germany instead of, or right along with, Japan.

But for the grace of God, WW2 could have been much more horrific than it actually was.