Years of service 1823 - 1863 Name Hannibal Day | ||
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Born February 15, 1804
Montpelier, Vermont ( 1804-02-15 ) Buried at Evergreen Cemetery, Leominster, Massachusetts Allegiance United States of America
Union (1861 – 1865) Rank Colonel
Brevet Brigadier General Battles/wars Seminole War
Mexican War
American Civil War Died March 26, 1891, Morristown, New Jersey, United States Education United States Military Academy Place of burial Evergreen Cemetery, Morristown, New Jersey, United States, Leominster, Massachusetts, United States Battles and wars Seminole Wars, Mexican–American War, American Civil War Commands held 2nd Infantry Regiment, 6th Infantry Regiment | ||
Service/branch United States Army | ||
Hannibal Day served as an officer in the regular army before and during the American Civil War, briefly commanding a brigade in the Army of the Potomac.
Biography
Hannibal Day was born in Montpelier, Vermont on February 15, 1804. He attended the United States Military Academy at West Point, New York, graduating 23rd in a class of 35 in 1823. Day was assigned to the infantry, serving in Indian wars, including the Seminole War and in the Mexican War. Day was promoted to the rank of lieutenant colonel of the 2nd U.S. Infantry on February 25, 1861. He was serving at Fort Abercrombie in the Dakota Territory when the Civil War erupted. He was on recruiting duty in the early months of the conflict. During that time of service Day became colonel of the 6th U.S. Infantry on June 7, 1862.
Colonel Day joined the Army of the Potomac on June 28, 1863. He served as a brigade commander in the second division of V Corps under BG Romeyn B. Ayres at the Battle of Gettysburg. His brigade of regulars lost substantial casualties when it was attacked during deployment into the Wheatfield on July 2, 1863. The attack was executed by the brigade of Brig Gen William T. Wofford, and it cost Day's brigade 382 casualties. (Afterwards, Day's brigade was combined with that of Sidney Burbank, serving under Burbank in the Bristoe Campaign and the Mine Run Campaign. The regulars later were made part of a brigade under Ayers in General Charles Griffin's first division V Corps.)
Day was elderly, one of the oldest officers commanding at Gettysburg. (Only his classmate George S. Greene was older.) He left the Army of the Potomac on August 22, 1863 for less demanding assignments. Col Day commanded Fort Hamilton in New York from August 1863 until June 8, 1864. He played minor administrative roles after that. A Brevet rank of brigadier general was awarded to him on March 13, 1865. According to Newell & Shrader (p. 216), Day had already retired as colonel of the 6th Infantry August 1, 1863.
Day lived long after the war. He was one of the oldest graduates of West Point when he died, a widower, in Morristown, New Jersey on March 26, 1891. He was buried at Evergreen Cemetery in Leominster, Massachusetts.