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Samuel Cooper (general)

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Title: Samuel Cooper (general)  
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Subject: General officers in the Confederate States Army, Mason family, Alexander Macomb (general), Knoxville Campaign, American Civil War
Collection: 1798 Births, 1876 Deaths, Adjutant Generals of the United States Army, American Military Personnel of the Mexican–american War, Burials at Christ Church Episcopal Cemetery (Alexandria, Virginia), Confederate States Army Full Generals, Confederate States Army Generals, Mason Family, Northern-Born Confederates, People from Alexandria, Virginia, People from Hackensack, New Jersey, People from Montgomery, Alabama, People of Virginia in the American Civil War, United States Army Colonels, United States Military Academy Alumni
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Samuel Cooper (general)

Samuel Cooper
Born (1798-06-12)June 12, 1798
New Hackensack, New York
Died December 3, 1876(1876-12-03) (aged 78)
Alexandria, Virginia
Place of burial Christ Church Cemetery
Alexandria, Virginia
Allegiance United States of America
 Confederate States of America
Service/branch  United States Army
 Confederate States Army
Years of service 1815–1861 (USA)
1861–1865 (CSA)
Rank Colonel (USA)
General (CSA)
Commands held Adjutant General and Inspector General
Battles/wars Second Seminole War
Mexican-American War
American Civil War

Samuel Cooper (June 12, 1798 – December 3, 1876) was a career United States Army officer, serving during the Second Seminole War and the Mexican-American War. Although little-known today, Cooper was also the highest-ranking Confederate general during the American Civil War. After the conflict, he remained in Virginia as a farmer.


  • Early life and career 1
  • Civil War service 2
  • Postbellum life 3
  • Selected works 4
  • See also 5
  • Notes 6
  • References 7
  • External links 8

Early life and career

Samuel Cooper was born in New Hackensack, Dutchess County, New York.[1] He was a son of Samuel Cooper and his wife Mary Horton.[2] In 1813 he entered the United States Military Academy at age 15 and graduated 36th in a class of 40 two years later (the customary length of study in that period.)[3] He was appointed a brevet second lieutenant in the U.S. Light Artillery on December 11, 1815. He was promoted to first lieutenant in 1821 and to captain in 1836.[4]

In 1827, Cooper married Sarah Maria Mason, becoming the brother-in-law of future Confederate diplomat James M. Mason and later the father-in-law of Union General Frank Wheaton. Sarah's sister, Ann Maria Mason, was the mother of Confederate cavalry general Fitzhugh Lee, a nephew of Robert E. Lee, while her brother John Mason, was son-in-law of Gen. Alexander Macomb. Cooper served as aide-de-camp for Gen. Macomb from 1828 to 1836 and under his supervision authored A Concise System Of Instructions And Regulations For The Militia And Volunteers Of The United States with him.

Cooper in the U.S. Army

Cooper served in numerous artillery units until 1837, when he was appointed chief clerk of the U.S. War Department. In 1838 he received a brevet promotion to major and was appointed assistant adjutant general of the Army. Nine years later, with a brevet as lieutenant colonel, he served in the same capacity.

Cooper's service in the Second Seminole War of 1841–42 was a rare departure for him from Washington, D.C. He was chief of staff for Col. William J. Worth, and after hostilities ended he returned to staff duty in Washington from 1842 to 1845.[5] Cooper received a brevet promotion to colonel on May 30, 1848, for his War Department service in the Mexican-American War, and was promoted to the permanent rank of colonel in the regular army and appointed the army's Adjutant General on July 15, 1852.[4] Cooper also served very briefly as acting U.S. Secretary of War in 1857.[6]

Civil War service

At the beginning of the Civil War, Cooper's loyalties were with the South. His wife's family was from Virginia, and he had a close friendship with Jefferson Davis, who had also been U.S. Secretary of War.[7] One of his last official acts as Adjutant General of the U.S. Army was to sign an order dismissing Brig. Gen. David E. Twiggs from the army. Twiggs had surrendered his command and supplies in Texas to the Confederacy (and was shortly thereafter made a Confederate major general.) This order was dated March 1, 1861, and Cooper resigned six days later. He traveled to Montgomery, Alabama, at the time the Confederacy's capital, to join the Confederate States Army.[3]

On reaching Montgomery, Cooper was immediately given a commission as a

Military offices
Preceded by
Roger Jones
Adjutant General of the U. S. Army
July 15, 1852 – March 7, 1861
Succeeded by
Lorenzo Thomas
  • Biography at
  • Lee's Lieutenants site biography of Cooper.
  • "Samuel Cooper".  
  • Civil War Landscapes site military biography of Cooper.

External links

  • Davis, William C. "General Samuel Cooper." In Leaders of the Lost Cause: New Perspectives on the Confederate High Command, edited by Gary W. Gallagher and Joseph T. Glatthaar, 101-131. Mechanicsburg, PA: Stackpole Books, 2004.
  • Dupuy, Trevor N., Curt Johnson, and David L. Bongard. The Harper Encyclopedia of Military Biography. New York: HarperCollins, 1992. ISBN 978-0-06-270015-5.
  • Eicher, John H., and David J. Eicher. Civil War High Commands. Stanford, CA: Stanford University Press, 2001. ISBN 0-8047-3641-3.
  • Lee, Fitzhugh. "Sketch of the Late General S. Cooper." Southern Historical Society Papers 3, no. 5-6 (June 1877): 269-76.
  • Snow, William P. Lee and His Generals. New York: Gramercy Books, 1996. ISBN 0-517-38109-5. First published 1867 by Richardson and Co.
  • Wakelyn, Jon L. Biographical Dictionary of the Confederacy. Westport, CT: Greenwood Press, 1977. ISBN 0-8371-6124-X.
  • Warner, Ezra J. Generals in Gray: Lives of the Confederate Commanders. Baton Rouge: Louisiana State University Press, 1959. ISBN 0-8071-0823-5.
  • Wright, Marcus J., General Officers of the Confederate Army: Officers of the Executive Departments of the Confederate States, Members of the Confederate Congress by States. Mattituck, NY: J. M. Carroll & Co., 1983. ISBN 0-8488-0009-5. First published 1911 by Neale Publishing Co.


  1. ^ Davis, William C. "General Samuel Cooper." In Leaders of the Lost Cause: New Perspectives on the Confederate High Command, edited by Gary W. Gallagher and Joseph T. Glatthaar, 101-131. Mechanicsburg, PA: Stackpole Books, 2004, 102; Lee, Fitzhugh. "Sketch of the Late General S. Cooper." Southern Historical Society Papers 3, no. 5-6 (June 1877): 271; Mary Boykin Chesnut, A Diary from Dixie As Written by Mary Boykin Chesnut (New York: D. Appleton and Company, 1905), 150. Cooper's place of birth is often incorrectly given as Hackensack, New Jersey, by Dupuy (p. 189), Eicher (p. 184), Wakelyn (p. 150), and Wright (p. 9); place of birth given as Dutchess County, New York, by Warner (p. 62), or just New York by Snow (p. 305); place of birth given as New Hackensack, New York, by both websites "" and "".
  2. ^ Wakelyn, p. 150.
  3. ^ a b c d "Lee's Lieutenants site biography of Cooper". Retrieved September 23, 2011. 
  4. ^ a b c d e f Eicher, p. 185.
  5. ^ Dupuy, pp. 189-90.
  6. ^ Eicher, p. 185. He held the position from March 3 to 6, 1857.
  7. ^ Warner, pp. 62-3.
  8. ^ a b Warner, p. 63.
  9. ^ Eicher, p. 807. Generals (ACSA) Line Command List
  10. ^ Lee's Lieutenants site biography of Cooper: "This contribution is said to be Samuel's most lasting contribution to the Confederacy, in overseeing the removal of War Department records from Richmond in April 1865, and protecting them until they could be turned over to Federal authorities..."


See also

  • A Concise System of Instructions and Regulations for the Militia and Volunteers of the United States, Comprehending the Exercises and Movements of the Infantry, Light Infantry, and Riflemen; Cavalry and Artillery: Together with the manner of doing duty in Garrison and in Camp, and for the forms of Parades, Reviews, and Inspections, as established ... for the government of the Regular Army. Prepared and Arranged by Brevet Captain S. Cooper, Aide de Camp and Assistant Adjutant General. Under the Supervision of Major General Alexander Macomb, Commanding the Army of the United States. (Philadelphia: Robert P. Desilver, 1836).

Selected works

After the war, Cooper was a farmer at his home, Cameron, near Alexandria, Virginia. His house had been taken over by the U.S. government during the war and turned into a fort, but he was able to move into what had been an overseer's house. Due to his age Cooper earned a meager living. On August 4, 1870, Robert E. Lee, on the behalf of other former Confederates, sent Cooper $300. Lee wrote to him saying, "To this sum I have only been able to add $100, but I hope it may enable you to supply some immediate want and prevent you from taxing your strength too much."[3] Samuel Cooper died at his home in 1876, and is buried there in Christ Church Episcopal Cemetery.[4]

Cooper's last official act in office was to preserve the official records of the Confederate Army and turn them over intact to the United States government, where they form a part of the Official Records, The War of the Rebellion: a Compilation of the Official Records of the Union and Confederate Armies, published starting in 1880. Military historians have highly regarded Cooper for this action.[10] Historian Ezra J. Warner believed that in doing so Cooper was "thereby making a priceless contribution to the history of the period."[8]

Postbellum life

On May 16, 1861, Cooper was promoted to full general in the Confederate Army.[4] He was one of five men promoted to the grade at that time, and one of only seven during the war, but with the earliest date of rank. Thus, despite his relative obscurity today, he outranked such luminaries as Albert Sidney Johnston, Robert E. Lee, Joseph E. Johnston, and P.G.T. Beauregard.[9] Cooper reported directly to Confederate President Jefferson Davis."[3] At the war's end in 1865, Cooper surrendered and was paroled on May 3 at Charlotte, North Carolina.[4]


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