What kind of relationship do the Nez Perce have with the U.S. Military?

What kind of relationship do the Nez Perce Tribe have with the U.S. Military? Allen Pinkham and Steven Evans (co-authors of Lewis and Clark Among the Nez Perce) answer this visitor's question during their book signing event at the Lolo Pass Visitor Center on the Nez Perce - Clearwater National Forest.