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The Union Armies (USA) of the US Civil War

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  • Charles Lemuel Dresser (1840 - 1933)
    4th Minnesota Infantry Regiment Field OfficersBaxter, Luther L. Major Edson, James C. Lieutenant Colonel Sanborn, John B. Colonel Thomas, Minor T. Lieutenant Colonel Tourlellotte, John E. Colonel Welch...
  • Sylvester Avery (1832 - 1863)
    Served in 8th Vt. reg't, Co. D; d. June 3, 1863, in the army. THE GROTON AVERY CLAN, Vol. I, by Elroy McKendree Avery and Catherine Hitchcock (Tilden) Avery, Cleveland, 1912. p. 542
  • George Avery (c.1836 - 1862)
    Served in the 9th Vt, reg't, Co. G; d. June 28, 1862, in the army; unm. THE GROTON AVERY CLAN, Vol. I, by Elroy McKendree Avery and Catherine Hitchcock (Tilden) Avery, Cleveland, 1912. p. 542
  • Chambers O. Fair (1842 - 1862)
    139th Pennsylvania Volunteer Infantry, Company B Mustered in on September 1, 1862. Died in Hagerstown, MD, on November 13, 1862.
  • Harrison Emmett Overdorff (1844 - 1910)
    55th PA Infantry Regiment, Company F Mustered in on September 19, 1861. Promoted to Corporal on June 12, 1865. Mustered out with Company on August 30, 1865.

NOTE: This project is NOT for individual profiles. Please add profiles to State or Unit projects only.

The Union Army was the land force that fought for the Union during the American Civil War. It was also known as the Federal Army, the U.S. Army, the Northern Army and the National Army.[1] It consisted of the small United States Army (the regular army), augmented by massive numbers of units supplied by the Northern states, composed of volunteers as well as conscripts.

Major organizations

The Union Army was composed of numerous organizations, which were generally organized geographically.


   An organization that covered a defined region, including responsibilities for the Federal installations therein and for the field armies within their borders. Those named for states usually referred to Southern states that had been occupied. It was more common to name departments for rivers or regions.

District: A subdivision of a Department . There were also Subdistricts for smaller regions.

Military Division

   A collection of Departments reporting to one commander . Military Divisions were similar to the regions described by the more modern term, Theater.


   The fighting force that was usually, but not always, assigned to a District or Department but could operate over wider areas.


(such as Department of the Tennessee, Department of the Cumberland) (Department of the Pacific, Department of New England, Department of the East, Department of the West, Middle Department)

District== (e.g., District of Cairo, District of East Tennessee)


(e.g., Military Division of the Mississippi, Military Division of the Gulf)



Regular Army