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The Official Records of the American Civil War or often more simply the Official Records or ORs, constitute the most extensive collection of primary sources of the history of the American Civil War. They include selected first-hand accounts, orders, reports, maps, diagrams, and correspondence drawn from War and Navy Department records of both Confederate and Union governments.

Union and Confederate Armies

Collection of the records began in 1864; no special attention was paid to Confederate records until just after the capture of Richmond, Virginiamarker, in 1865, when with the help of Confederate Gen. Samuel Cooper, Union Army Chief of Staff Maj. Gen. Henry W. Halleck began the task of collecting and preserving the archives of the Confederacy. In 1866 a joint resolution of Congress authorized the compilation and publication under auspices of the War Department. Eventually, seventeen Secretaries of War were involved in the process. In 1877, Army Captain Robert N. Scott was appointed by the Secretary of War as director of the Publications Office, War Records. (Scott's name appears in each volume as the preparer, listed with the rank of Brevet Lieutenant Colonel, 3rd U.S. Artillery.)

The original title for the records was The Official Records of the War of the Rebellion and they were later renamed The War of the Rebellion: a Compilation of the Official Records of the Union and Confederate Armies, which has led to some lasting controversy over the official name for the war. As finally published, the records consist of 138,579 pages with 1,006 maps and diagrams assembled in 128 books, organized as 70 volumes grouped in four series, published between 1881 and 1901. Each of the four series of books in the compilation is divided into "volumes" numbered from the beginning of the series with roman numerals. In series II, III, and IV each "volume" coincides with a book. In series I, however, it was found to be usually impracticable, beginning with volume X, to confine "volumes," as units of content, within single books. Volume X and most subsequent volumes in series I were therefore issued in "parts" distinguished by subsidiary roman numerals, each occupying a separate book. Beginning with volume XXIV, Arabic "serial numbers" were also printed on the backs of the books issued, although these numbers were not included on the title pages, and are therefore not universally used in citations.

Series I — Military Operations
Formal reports, both Union and Confederate, of the first seizures of United States property in the southern States, and of all military operations in the field, with the correspondence, orders, and returns relating specially thereto (Serial Nos. 1-111)
Series II — Prisoners
Correspondence, orders, reports, and returns, Union and Confederate, relating to prisoners of war and (so far as the military authorities were concerned) to State or political prisoners (Serial Nos. 114-121)
Series III — Union Authorities
Correspondence, orders, reports, and returns of the Union authorities (including their correspondence with the Confederate officials) not relating specifically to the subjects of series I and II. It includes the annual and special reports of the Secretary of War, of the General-in-Chief, and of the chiefs of the several staff corps and departments; the calls for troops and the correspondence between the National and the several State authorities (Serial Nos. 122-126)
Series IV — Confederate Authorities
Correspondence, orders, reports, and returns of the Confederate authorities, similar to the Union material in series III, but excluding the correspondence between the Union and Confederate authorities given in that series (Serial Nos. 127-129)

A final comprehensive index (Serial No. 130) was published in 1901 with remaining additions and corrections.

A companion volume, the Atlas to Accompany the Official Records of the Union and Confederate Armies, was published in 1895. It included maps of military operations (175 plates), a topographic map of the area of operations (26 plates), and some drawings of weapons, uniforms, insignia, and flags.

In 1966, the U.S.marker National Archivesmarker began publication of a five-volume set that comprised an arguably superior index to the Army ORs, Military Operations of the Civil War: A Guide Index to the Official Records of the Union and Confederate Armies, 1861-1865, microfilm publication M1026. Introductory material to the guide-index offers guidance to readers of the ORs:

Because of the enormous volume of material, the lengthy time period of collection and publication, and the constant and continuing process of correction by veterans of both sides still living contemporarily, the records are perhaps the most intensely peer-reviewed documents in historical publication. Historians have argued that some of the modifications made years after the events have decreased the accuracy of the records and were made simply to enhance personal reputations (or to denigrate the reputations of rivals).

An additional 100 volumes of previously unpublished reports and correspondence were published by the Broadfoot Publishing Company of Wilmington, North Carolinamarker, from 1995 to 1999, entitled Supplement to the Official Records Of the Union and Confederate Armies.

Union and Confederate Navies

Unfortunately, most of the Confederate Navy Department records were lost during the burning of Richmond. Union Navy Department records were preserved, but not until 1884 was work begun by Navy Department librarian, later Assistant Secretary of the Navy, James R. Soley to collect and publish. Intending to partially replace missing reports, many personal narratives were collected and included, often gaining Navy researchers incidental access to draft copies of original reports once thought lost. The official title of publication is Official Records of the Union and Confederate Navies in the War of the Rebellion.

Series I
Records of all naval operations including all inland waterways
Series II
Records relating to statistics and condition of both forces at the outset of conflict, returns of captured materials, and records of naval prisoners of war

A proposed third series was deemed unnecessary; the final volume of series two was published in 1922. The Navy Department did not publish a comprehensive index to these volumes.

Other historical sources

While the Official Records are probably the most-used of all primary sources for historical research on the Civil War, there are other contemporary published works that provide well-sourced insights not constrained by the types of sources compiled by government:

Southern Historical Society Papers
Published in 52 volumes from 1869 to the 1950s, includes reminiscences and analyses of war experiences by Confederate veterans.

Battles and Leaders of the Civil War
A series of articles published between 1884 and 1887 in The Century Magazine and then assembled into a four-volume set of books, includes battle studies by Union and Confederate commanders of all ranks, from Ulysses S. Grant down to company officers. (In the 1990s, additional related material was compiled into two more volumes.) Accounts are usually first-hand and often written by an officer actually in command in a subject engagement or campaign.


  • Aimone, Alan C., and Aimone, Barbara A., A User's Guide to the Official Records of the American Civil War, White Mane Publishing Company, 1992, ISBN 0-942597-38-9.
  • Hewett, Janet B., "Updating the Documentary History of the U.S. Civil War", Journal of Government Information, Vol, 26, No.1, 1999.
  • Sauers, Richard A., "The War of the Rebellion (Official Records)", Encyclopedia of the American Civil War: A Political, Social, and Military History, Heidler, David S., and Heidler, Jeanne T., eds., W. W. Norton & Company, 2000, ISBN 0-393-04758-X.
  • U.S. National Archives, Military Operations of the Civil War: A Guide Index to the Official Records of the Union and Confederate Armies, 1861-1865, National Archives microfilm publication M1026, 1966-1980.


  1. Sauers, p. 2060.
  2. Sauers, p. 2061. Although the volumes are numbered as high as 130, volume numbers 112 and 113 were reserved for a more extensive index of Series I that was never published.
  3. National Archives M1026, p. 9.
  4. Content descriptions from National Archives M1026, p. 7.
  5. Sauers, p. 2061.

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