Late in the war, Trobriand occasionally led a division during the Petersburg Campaign and the Appomattox Campaign, especially when Gershom Mott was wounded in the latter campaign. On January 13, 1866, President Andrew Johnson nominated de Trobriand for the brevet grade of major general to rank from April 9, 1865, and the U.S. Senate confirmed the nomination on March 12, 1866.Eicher, 2001, p. 711 De Trobriand was mustered out of the volunteer service on January 15, 1866. On December 3, 1867 President Andrew Johnson nominated him for the brevet grade of brigadier general in the regular army, to rank from March 2, 1867 and the U.S. Senate confirmed the award on February 14, 1868.Eicher, 2001, p. 733
