22, 1872), Sycamore Creek (October 19, 1872), Rio Verde (November 16, 1872), and Gila River (January 16, 1873). From February 1873 to February 1875, Schuyler commanded the 5th Cavalry's Indian Scouts during duty at the Rio Verde Reservation and on scouting duty. This service included participation in engagements at East Fork (December 4, 1873), Cave Creek (December 23, 1873), Cañon Creek (January 10, 1874), Superstition Mountain (March 25‑26), and Mescal Mountains (May 17-18, 1874). After an extended leave of absence from February 1875 to February 1876, Schuyler was posted briefly to Fort Hays, Kansas, then assigned to duty as aide-de-camp to General George Crook, commander of the Department of the Platte. He was promoted to first lieutenant on July 29, 1876, and remained on Crook's staff until 1882. Schuyler took part in the Great Sioux War of 1876, including the Battle of Slim Buttes from September 9 to 10. From January 1882 to April 1883, Schuyler was on frontier duty with the 5th Cavalry at Fort Sidney, Nebraska. From April to July 1883 he was on duty at Fort McKinney, Wyoming. In the summer of 1883, Schuyler lead a surveying party through Yellowstone National Park. From September 1883 to October 1886, he was assigned as professor of military science at Cornell University. He then returned to duty with the 5th Cavalry, this time at Fort Reno, Oklahoma, where he remained until May 1887. In April 1887, Schuyler received promotion to captain. He served with the 5th Cavalry at Fort Riley, Kansas, from May 1887 to July 1889. From July 1889 to October 1890 he served at Fort Elliott, Texas. Continued career Schuyler commanded Troop H, 5th Cavalry at Fort Sill, Oklahoma, from October, 1890 to February 1893. From March to December 1893 he was on duty at the World's Columbian Exposition in Chicago. He commanded his troop at Fort Sam Houston, Texas, from February 1894 to December 1895 and at Fort Ringgold, Texas, from January to September 1896. From October 1896 to April 1898, Schuyler was again assigned as professor of military science at Cornell University. At the start of the Spanish–American War in May 1898, Schuyler was promoted to major of United States Volunteers and assigned as mustering officer at Camp Black, near Garden City, New York. In June, he was appointed adjutant of 2nd Division, Second Corps. In July, Schuyler was promoted to colonel of volunteers and assigned