Thomas Allcock with the 4th New York Heavy Artillery
|Born||27 January 1815
|Died||28 December 1891
New York City, New York
Ossining, New York
|Allegiance||United States of America
|Service/branch||United States Army
|Years of service||1861–1866|
|Rank|| Lieutenant Colonel
Bvt. Brigadier General
|Unit||4th New York Heavy Artillery Regiment|
|Battles/wars||American Civil War|
|Other work||inventor, founder of the Allcock Manufacturing Company|
Allcock was born and educated in Birmingham, England. At age 15, he studied and practiced chemistry. Allcock emigrated to the United States in 1845, settled in New York and opened a drug store. In 1854, he invented a porous plaster for the relief of pain, and subsequently formed Allcock Manufacturing.
Allcock joined the New York State Militia, and was appointed Captain on 27 October 1856 with the Second Brigade, a post he held until the outbreak of the American Civil War. Allcock was made Assistant Adjutant General on 13 April 1861, headquartered in the New York Depot. On January 4, 1862, he mustered with the 4th New York Heavy Artillery as major.
Allcock was engaged in the battles of the Wilderness, Spotsylvania, North Anna, Totopotomoy, Hanover Court House, Cold Harbor, Petersburg, first and second Deep Bottom, Weldon Railroad, and Ream's Station. Allcock was wounded while in command of the Third Battalion at the First Battle of Ream's Station on 25 August 1864, for which he was appointed brevet colonel. Allcock was on detached duty as an invalid from September 1864 to December 2, 1865 when he was discharged due to the end of the war.
On February 21, 1866, President Andrew Johnson nominated Allcock to the grade of brevet brigadier general of volunteers, to rank from March 13, 1865, and the United States Senate confirmed the nomination on April 10, 1866.
- Kirk, Hyland C. (1890). Heavy Guns and Light: A History of the 4th New York Heavy Artillery. New York, NY: C.T. Dillingham. p. 447. Retrieved 21 April 2009.
- Eicher, John H., and David J. Eicher, Civil War High Commands. Stanford: Stanford University Press, 2001. ISBN 978-0-8047-3641-1. p. 101.
- Eicher, 2001, p. 739.
- "Gen. Thomas Allcock Dead". New York Times. 28 December 1891. Retrieved 21 April 2009.