Traditional histories of the Texas frontier overlook a crucial component: efforts to defend Texas against Indians would have been far less successful without the contributions of Indian allies. The government of Texas tended to use smaller, nomadic bands such as the Lipan Apaches and Tonkawas as military allies. Immigrant Indian tribes such as the Shawnee and Delaware were employed primarily as scouts and interpreters. Texas, as a result of the terms of her annexation, retained a more control over Indian policy than other states. Texas also had a larger unsettled frontier region than other states. This necessitated the use of Indian allies in fighting and negotiating with hostile Indians, as well as scouting for Ranger and Army expeditions.

The scope of this study is limited to Federal military occupation during the five years from 1865 to 1870. Only the interior counties, where a dense Negro population required the exercise of political and social responsibilities, will be considered in detail. A line from Wise through Bosque, Travis, Wilson, Karnes, and Goliad Counties to the coastal town of Corpus Christi would roughly separate interior from frontier posts.