July 24, 1900 – May 8, 1901 Captain/Major John Pitcher: May 8, 1901 – June 1, 1907 Lt. General Samuel B. M. Young (retired): June 1, 1907 – November 28, 1908 Major H. T. Allen (Commander of troops) Major Harry C. Benson: November 28, 1908 – September 30, 1910 Colonel Lloyd M. Brett: September 30, 1910 – October 15, 1916 Units assigned Six different cavalry regiments were stationed off and on during army administration of Yellowstone. 1st Cavalry Regiment: 1886–1891, 1900–1902, 1911–1914 4th Cavalry Regiment: 1898–1899 5th Cavalry Regiment: 1909–1910 6th Cavalry Regiment: 1892–1897, 1906–1907 8th Cavalry Regiment: 1908 Yellowstone Park Detachment: 1915–1916 7th Cavalry Regiment: 1917–1918 See also Grand Loop Road Historic District Lake Fish Hatchery Historic District North Entrance Road Historic District Roosevelt Lodge Historic District Old Faithful Historic District US Post Office-Yellowstone Main Notes References External links National Historic Landmark Project: Fort Yellowstone National Park Service: Fort Yellowstone National Historic Landmarks in Wyoming Reed and Stem buildings Historic American Buildings Survey in Wyoming Military administration of Yellowstone National Park Yellowstone United States Department of War National Register of Historic Places in Park County, Wyoming National Register of Historic Places in Yellowstone National Park Historic districts on the National Register of Historic Places in Wyoming 1891 establishments in Wyoming Colonial Revival architecture in Wyoming