Nicholas Merritt Nolan (March 10, 1835 – October 24, 1883) was a United States Army major. An Irish immigrant, he began his military career in New York on December 9, 1852 with the 4th Artillery, and subsequently served in New York's 2nd Dragoons. He enlisted as a private and rose through the ranks becoming a first sergeant. He was commissioned an officer in late 1862 in the Regular Army, while serving with the 6th U.S. Cavalry Regiment during the American Civil War. He participated in 16 campaigns with the 6th and most of its battles. He was slightly wounded at the Battle of Fairfield and seriously wounded at the Battle of Dinwiddie Court House. He was brevetted twice and noted at least twice for gallantry during combat. He was slightly wounded when captured at the end of March 1865, and