Reading some histories of the Wild West, Native Americans, the Dakotas and the like, I came across several references to a "transfer question" and a debate over whether Indian affairs ought to be controlled by civilians or the military. Ultimately, in OTL, the proponents of civilian control won out, and the Office of Indian affairs remained a civilian organization. WI, then, the military proponents (mainly westerners and Democrats) had won the day, and Indian affairs were handed off to the military sometime in the 1860s or '70s?