Do it! Lots of it is stuff you'd do naturally for someone hurt but having the knowledge and confidence can truly make the difference for the person you help. It's pretty easy to find courses near you, check community colleges and local extension/parks & rec offices if you're in a rural area.
Terrain appropriate camo netting and clothing to help hide roadside ambushes? Sounds like you are a supplier. If you are willing to deliver you can also team up with logistics.