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The Union Armies (USA) of the US Civil War

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  • Pvt. Edward Daud Noyes, USA (1813 - 1862)
    Civil War Union Army soldier. Private, Co. A, 19th Massachusetts Infantry. Killed in action during the Battle of Fredericksburg.
  • Hon. Theodore Runyon, U.S. Ambassador to Germany (1822 - 1896)
    Theodore Runyon (October 29, 1822 – January 27, 1896) was a United States politician, diplomat, and American Civil War brigadier general in the New Jersey Militia, serving with the Union Army at the ...
  • John Heald Melvin (1841 - 1863)
    One of four brothers who fought in the Civil War. Three of the four brothers fell, including John Heald Melvin, age 22.
  • Maj. General John E. Wool (USA) (1784 - 1869)
    John Ellis Wool (February 20, 1784 – November 10, 1869) was an officer in the United States Army during three consecutive U.S. wars: the War of 1812, the Mexican-American War and the American Civil W...
  • Brevet Brig. General Stewart L. Woodford (USA), Envoy Extraordinary and Minister Plenipotentiary to Spain (1835 - 1913)
    Click here to view the page for Stewart Lyndon Woodford Click here to view more about Stewart Lyndon Woodford on the Spanish American War Centennial Website From the 1870 federal cens...

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