Military Ring? Help?

Hello everyone,

Was wondering if you could help me identify what this ring pertains to.

I purchased it in a lot group lot of "Military" items, and to me it looked sort of trench art style.

Any ideas what type of ring this is, or if it's military?

Thanks in advance!

 

Navajo.
You find those same stampings on Fred Harvey era Navajo jewelry.

 

I'm not seeing anything military. It's a classic signet shape with Southwestern designs. No clue where it really came from; it looks like a piece of Bell Trading Post jewelry to me, but if it's not marked then it's something else.