Blackbird Clan Member Glenkinchie:
It's not that difficult. You must have seen the supply boxes laying around. They started getting supplies regularly, but they are still not organized.
Please open those supply boxes and get me the supplies. Don't just open any box though. There are some traps that could make it very dangerous.
Oh, and one more thing! If you defeat the Quartermasters, the soldiers will be affected, making it easier to steal their supplies.