Aaron Simon Daggett (June 14, 1837 – May 14, 1938) was a career United States Army officer. He was the last surviving brevet Union general of the American Civil War, and the last surviving general of any grade from the war, when he died one month shy of his 101st birthday in 1938. Daggett was nominated for appointment to the grade of brevet brigadier general, to rank from March 13, 1865, by President Andrew Johnson on February 21, 1866 and was confirmed by the United States Senate on April 10, 1866. During the war, Daggett fought at West Point, Gaines' Mill, Golding's Farm, White Oak Swamp, Second Bull Run, South Mountain, Antietam, Rappahannock Station, Fredericksburg, Battle of Gettysburg, Battle of Mine Run, Battle of the Wilderness and Battle of Cold Harbor. Daggett was a brigadier general of volunteers in the Spanish–American War. He was appointed to the brigadier general grade to rank from September 1, 1898 and was mustered out of the volunteers on November 30, 1898. He was promoted to brigadier general in the Regular Army (United States) ten days before his retirement from the army on March 2, 1901.