'Weed smoking gung-ho ?!'
Well I can honestly say, happily, I know very little about narcotics - but I thought 'weed' refers to Hashish or Mariuana - both forms of 'pot' as far as I make out ( what's the difference between them ? seriously ...) , but also both well known for making the subject 'mellow' & peaceful, as I've heard, so hardly the most fearsome fighting Terminators !
I'd have thought alcohol is one of the worst drugs for causing aggresive behaviour ( or I suppose in this example one of the 'best' if it's against foes ) - but the stuff the Afghans are keen to farm & sell - basically Opium in it's several end-product low-life forms - is apparently indeed powerful, though whether it makes one incredibly brave or just plain stupid is up for the more stable minded present to comment if they can.
All in all sounds a bit like a poor 'Boy's Own' story - " the drug cazed fuzzy-wuzzies ran at them ..."