Turn of the century renegade

One of the reasons I am so interested in the American west during the mid 1800's through the turn of the century is the mixing of all the different cultures. I like the use in movies and books of Native Americans wearing American army clothing or weapons. Did they trade for them? Or are they trophies of battle? So I just came up with this dude whose been through some stuff and got some trophies of his own. Went a little more cartoony/exaggeration for fun on this one and inked it all in brush to get a little more use out of it. I'm mostly a nib guy.