Samuel Perry "Powhatan" Carter (August 6, 1819 – May 26, 1891) was a United States naval officer who served in the Union Army as a brevet major general during the American Civil War and became a rear admiral in the postbellum United States Navy. He was the first and thus far only United States officer to have been commissioned both a general officer and a Naval flag officer. C.f.: Joseph D. Stewart, Major General (United States Marine Corps) and Vice Admiral (United States Maritime Service), the USMS being a civilian agency. C.f. also: Rear Admiral and Brigadier General Raphael Semmes, Confederate States Navy and Army. Early life and career Carter was born in Elizabethton, Tennessee, the eldest son of Alfred Moore Carter, a direct descendant of the early settlers for whom Carter County is named. His mother was Evalina Belmont Perry. Although later known as Samuel Powhatan Carter, Samuel's given middle name was Perry. He had two brothers, William Blount Carter and James Patton Taylor Carter. Samuel Carter attended the Duffield Academy in Elizabethton, Washington College in Limestone, and Princeton University before enlisting in the U.S. Navy in February 1840. Serving as a midshipman, Carter's five years of service included duty in the Pacific and Great Lakes region before transferring to the United States Naval Academy. He graduated in the class of 1846, later seeing action during the Mexican–American War aboard the USS Ohio at the Battle of Veracruz. Stationed at the United States Naval Observatory for several years following the war, Carter became an assistant professor of mathematics at the United States Naval Academy for three years, from 1850 to 1853. After another tour of duty with the Pacific and Brazil Squadrons, he served in various duties before winning promotion to lieutenant in April 1855. The following year, Carter was present aboard the USS San Jacinto during the bombardment of Chinese coastal fortifications before returning to the United States to be appointed to the staff at the U.S. Naval Academy, remaining at this tour of duty until 1860. Civil War In early 1861, after receiving a letter from Carter assuring his loyalty to the Union should a civil war break out, Tennessee senator Andrew Johnson used his influence in the War Department for Carter to be detached from the Navy. Carter was ordered to organize and enlist Unionists within his native East Tennessee, where the majority of the population