Trobriand also served in posts in Utah, during tensions with the Mormons, and commanded Fort Steele in Wyoming. In 1874 President Ulysses S. Grant assigned Trobriand to New Orleans, as colonel to lead the 13th Regiment in protecting the state legislature and other officers of government due to repeated violence in the state related to the 1872 disputed gubernatorial election in the state. In September 1874, 5,000 members of the White League had taken over state offices in the city for three days, in an attempt to turn out the Republicans. They retreated before federal troops arrived in the city. Trobriand reached New Orleans in October 1874. On January 4, 1875, he participated in ejection of eight Democrats who were not certified by the Returning Board, but attempted to take seats in the legislature, and refused to leave. Trobriand did not act until after receiving explicit orders from Governor Kellogg. During this period of dissolution of the Reconstruction government, despite speeches against interference with the legislature, individual Democrats praised Trobriand for his delicate handling of the situation. But, the Democrats established a separate legislature, meeting from then on at the Odd Fellows Hall and committed to Democrat Francis T. Nicholls, whom they claimed as governor in the 1876 election. Stephen B. Packard, a United States Marshal, was elected as the Republican governor of Louisiana, and occupied the State House with the Republican legislators, but effectively controlled only a small part of New Orleans around the state buildings. After President Grant withdrew federal troops from New Orleans in January 1877, Trobriand accompanied them to Jackson Barracks, outside the city on the Mississippi River. Nichols used a militia to take control of the courts and police. Trobriand had minimal assignments from 1877 until retirement from the Army on March 20, 1879, and conducted training of soldiers and other daily routines at the Barracks. He was ordered to Pittsburgh, Pennsylvania in July 1877 to command federal troops there against labor riots in the Great Strike, but these were suppressed by city and state forces after much property damage. Later years In retirement, Trobriand and his wife settled in New Orleans, in rue Clouet of the French Quarter. For years, he cultivated roses in a large garden, and also enjoyed painting and reading. He wrote Vie militaire dans le Dakota, notes et souvenirs (1867–1869) (published posthumously in 1926 (in English as Army Life in