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The Union Armies (USA) of the US Civil War

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  • Brevet Major Leroy R. Hawthorne (USA) (1828 - 1908)
    Before the Civil War, Leroy worked at the Spencer House hotel and the experience led him in 1856 to run a hotel in Winona, Minnesota, then a thriving town on the Mississippi River. Business prospered...
  • Pvt. Simon Peter Cousins (1842 - 1898)
    He served during the Civil War in Company "G" of the 78th Regiment; Pennsylvania Volunteer Infantry. He was wounded in battle at Pickett's Mills in Paulding County, Georgia; and he had his index finger...
  • Cpl. Thomas Truxton Stiles, Jr. (1836 - 1864)
    Company D, 53rd PA Infantry Regiment. Enlisted on March 13, 1864. Died on October 29th, 1864, of wounds received in battle. Buried at City Point in Prince George's County.
  • Pvt. William Hollen Stiles (1844 - 1914)
    Company H, 110th PA Infantry Regiment Mustered in on September 18, 1862. Wounded at Wilderness, VA, on May 6, 1864. Discharged by General Order on May 31, 1865.
  • Brig. General Lucius Fairchild (USA), Governor (1831 - 1896)
    Lucius Fairchild (December 27, 1831 – May 23, 1896) was an American politician, army general, and diplomat. He served as the tenth Governor of Wisconsin and as U.S. Minister to Spain. Mili...

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