Chalk, graphite, paint and a rubber

These drawings are inspired by my sudden interest in Native Indian war paint. This is my experimentation with this theme of war in mind, the hazy graphite smudges that are erased back through are how I imagined the setting of dust and hoof beats. The rings around the horses eyes and noes symbolize good sight and smell through this dusty, distorted scene. The colors mean endurance and wisdom.
This horse is in a similar setting to the other two but I wanted to compare a horse without war paint as I'm still really conflicted about over contaminating the horses. I don't want my horses to become tainted by man, but what really pulls me back to this war paint idea is my question, did the Indians really taint horses and use them?