Now the allies weren't much better but the Germans were the first group to do mass research poisonous gasses that had already been banned. Also the **** of Belgium.

No, they had not been banned, that was not intill after WW1, during WW1 gas was actually pretty human, it hardly ever killed you, it just sent you home for a few years (Which is all the Germans wanted, you to not be a threat anymore) only like 20% of them even died, and while thats not good, its a hell of a lot better than artillery that kills anything in its path with deadly shrapnel, i will take my chance with the gas thank you very much!

Dont even get me started about the "**** of Belgium" it was complete propaganda, i want you to remember something, during WW1 Britain cut Germany's communication lines to the US, the only information America got was through British Wartime radio, and that was notoriously biased to the point where it is basically propoganda.