The Comanche Indians presented a major challenge to the Republic of Texas throughout its nine-year history. The presence of the Comanches greatly slowed the westward advancement of the Texas frontier, just as it had hindered the advancing frontiers of the Spaniards and Mexicans who colonized Texas before the creation of the Republic. The Indian policy of the Republic of Texas was inconsistent. Changes in leadership brought drastic alterations in the policy pursued toward the Comanche nation. The author examines the Indian policy of the Republic, how the Comanches responded to that policy, and the impact of Texan-Comanche relations on both parties.