In 1882, the Department of the Interior granted rights to the Yellowstone Park Improvement Company to develop in the park. Their plan was to build a railroad into the park and sell the land to developers. Sheridan personally organized opposition to the plan and lobbied Congress for protection of the park; including expansion, military control, reducing the development to , and prohibiting leases near park attractions. In addition, he arranged an expedition to the park for President Chester A. Arthur and other influential men. His lobbying soon paid off. A rider was added to the Sundry Civil Bill of 1883, giving Sheridan and his supporters almost everything for which they had asked. In 1886, after a string of ineffectual and sometimes criminal superintendents, Sheridan ordered the 1st U.S. Cavalry into the park. The military operated the park until the National Park Service took it over in 1916.