Man in Two Camps by Chet Cunningham
He stood alone between the U. S. Calvery and the Apache!
Wade Chisholm has the bearing of a military officer, but moves with the catlike grace of an Apache. He has deep respect for his Apache heritage, yet will raise his rifle against it. He is a man of two worlds, constantly torn by gut loyalties. And when the U. S. Government decrees the Apache must be uprooted from their hunting grounds and moved to reservations, Wade Chisholm is forced to ride into the most important—and dangerous—assignment of his life!