In my Tri-fold GI Medic Bag:
A few GI wound bandages, suture and surgical kit, snake bite kit, a variety of bandages and bandaids, anti-bacterial ointment, Betadine solution, LED flashlight (much longer battery life!), First Aid handbook, and other goodies.
If I'm with a 'team', the 'medic' gets to carry this bag.
I am not medic-trained, but I have taken care of small wounds on myself - serious bone-deep cuts, sprains and even a minor broken bone. Having a very high pain-tolerance has really come in handy!