Question: What type of unit was this unit of the United States Army that served in combat during the Indian Wars in the western United States for which Wade H. Hammond served as bandmaster?
Sentence (from "Wade H. Hammond"): Wade H. Hammond (1879–1957) was an American musician who became one of the first African American bandmasters in the United States military in 1909, for the 9th Cavalry.
Relevant evidence: No