Truman Seymour (September 24, 1824 – October 30, 1891) was a career soldier and an accomplished painter. He served in the Union Army during the American Civil War, rising to the rank of major general. He was present at the Battle of Fort Sumter. He commanded the Union troops at the Battle of Olustee, the only major Civil War battle fought in Florida. Early life and career Seymour was born in Burlington, Vermont. The son of a Methodist minister, he attended Norwich University, beginning in 1840. After spending two years at Norwich, Seymour received an appointment to the United States Military Academy at West Point. He graduated in 1846, ranked nineteenth in a class of fifty-nine graduates. West Point's Class of 1846 stands as one of the most illustrious in the academy's storied history with George McClellan, Thomas J. "Stonewall" Jackson, Jesse Lee Reno, Darius Couch, George Stoneman, Samuel Sturgis, David Rumph Jones, and George Pickett among its members. After graduating, Seymour was assigned to the 1st U.S. Artillery. He immediately began his military service in the Mexican–American War. During that war, he was brevetted captain for his performance in the battles of Contreras and Churubusco and was promoted to first lieutenant six days later. After returning to the United States following the war, he became an assistant professor of drawing at West Point from 1850 to 1853 and fought against the Seminoles in Florida from 1856 to 1858. He was promoted to captain on November 22, 1860. Civil War In the months that led up to the Civil War Seymour served under Col. John L. Gardner at Fort Moultrie getting it prepared for the imminent war. When the Civil War began in 1861, Seymour commanded an artillery company in the defense against the Confederate assault on Fort Sumter, after which he received the brevet of major. Major Seymour commanded the 5th Regiment of Artillery and the U.S. Camp of Instruction at Harrisburg, Pennsylvania, from December 1861 to March 1862. He was Chief of Artillery for General George A. McCall's division of Pennsylvania Reserves from March 6, 1862, until July 25, 1862. On April 5, 1862, President Abraham Lincoln nominated Seymour for appointment to the grade of brigadier general of volunteers, to rank from April 28, 1862, and the United States Senate confirmed the appointment on that date. The appointment was made official on April 30, 1862. Seymour served in