Apache Scouts were Eyes and Ear of US ARMY

 The Apache Scouts were part of the United States Army Indian Scouts, most of their service was during the Apache Wars up to 1886 though the last scout retired in 1947. The Apache scouts were the eyes and ears of the United States military and sometimes the cultural translators for the various Apache bands and the Americans.

 Apache scouts also served in the Navajo War, the Tonto War, the Mexican Border War and they saw stateside duty during World War II. There has been a great deal written about Apache scouts, both as part of United States Army reports from the field and more colorful accounts written after the events by non-Apaches in newspapers and books.

Men such as Al Sieber and Tom Horn were sometimes in charge of small groups of Apaches. As was the custom in the United States military, scouts were enlisted with Anglo nicknames or single names. Many Apache scouts received citations for bravery.

 Read more: https://en.wikipedia.org/wiki/Apache_Scouts