Farming War Supplies

If you're asking with regard to getting enough oppressor weapons for your Hall of Monuments, I got mine by doing the wanted quests with a high reward:time ratio and playing through the war in kryta and hearts of the north storylines on other characters. Wasn't significantly grindy.

If you're asking with regard to how people obtain them in enormous quantities for sale, botting. To my knowledge, one of the hotn quests gives 5 war supplies in 10 mins or thereabouts. Idk which, or whether they do that one because it's the best war supply farm overall or if it's just the best one they can automate.

Is definetly easier to buy the from botters as a stack will cost you 15-25e. The time you need to farm a stack you can better invest in something else.

Swollen if you do war in kryta you can do the daily quests for war supps. 1x per day on every character