During the 1860s, American Indian raids increased as soldiers were occupied in the Civil War. This pushed the frontier line in Texas further east at times. In 1865, the Treaty of Little Arkansas was negotiated but the promised reservation was never created. The Treaty of Medicine Lodge in 1867 required Plains Indians to move to a reservation in Indian Territory in exchange for supplies, but some Indians refused to accept reservation life. The Peace Policy of 1869 aimed to prevent war by appointing Quakers as Indian agents, but reservation life was difficult due to poor soil and insufficient supplies from the government.