I'm interested to know what?
I've gone through the lot...
Coke... Nah, sketchy as feck, easier to sneak out the back and find a hooker
Mandy... Nope.... Sleep through the lot then cuddle everyone? Not a great weapon...
Acid... Not a chance.... No point laughing at the opposition while having three discussions in your head at the same time and wondering what being normal is like...m
Weed.....hahaha .. Really? First sketchy and paranoid everyone is after you then not giving a feck if they are or not and wanting to just sit and chat with them all..
Speed.... Nobody does speed anymore.... But if they did they would run the feck away... Quickly....
Heroin/opiates....... Yup, not happening.... And if it did, would you give a feck? Or be ablemtomdo anything about it?....
Ket...... You would fight a war, but not a real one, and not one in your vicinity because you have no concept of where you are or what you are doing.
So... Personally, I don't think drugs aid a soldier in the art of killing.... But definitely more in the art of getting out of there.