On July 20, 1867,
Congress established the Indian Peace Commission to negotiate peace with Plains Indian tribes who were warring with the United States. The
Peace Commission met in
St. Louis, Missouri, on August 6, 1867, where it elected
Nathaniel G. Taylor, Commissioner of Indian Affairs, as its president. Commissioners agreed that lasting peace was contingent upon separating Indians regarded as "hostile" from those regarded as friendly, removing all Indian tribes onto reservations away from the routes of U.S. westward expansion, and making provision for their maintenance. The official report of the Commission to the President of the United States, dated January 7, 1868, describes detailed histories of the causes of the Indian Wars including: numerous social and legal injustices to Indians, repeated violations of numerous treaties, acts of corruption by many of the local agents, and culpability of Congress in failing to fulfill certain legal obligations. The report asserts that the Indian Wars were completely preventable had the United States government and its representatives acted with legal and moral honesty in dealing with the Indians. Other members of the peace commission were
Lieutenant General William T. Sherman, commander of the Military Division of the Missouri;
Major General William S. Harney (retired), who had taken part in earlier conflicts with the Cheyenne and
Sioux along the
Platte River;
Brigadier General Alfred H. Terry, commander of the Military Department of Dakota;
Senator John B. Henderson of Missouri, Chairman of the Senate Indian Appropriations Committee, who had introduced the bill that created the peace commission;
Colonel Samuel F. Tappan, formerly of the First Colorado Volunteer Cavalry and a peace advocate who had led the U.S. Army's investigation of the
Sand Creek massacre; Major General
John B. Sanborn, formerly commander of the Upper Arkansas District, who had previously helped to negotiate the
Little Arkansas Treaty of 1865. Sherman, having made public remarks indicating his disagreement with the peace policy, was called to
Washington, D.C., and could not be present at the councils on the southern plains, including the council at Medicine Lodge Creek. Major General
Christopher C. Augur, commander of the Military Department of the Platte, replaced him as a temporary appointment. == Medicine Lodge River councils ==