Like almost all Southern states during the American Civil War, Arkansas provided a number of units to fight for the Union, organized from African-Americans and pro-Union sympathizers. Despite having the third smallest white population of any Confederate state, Arkansas supplied more white troops for the Union Army than any other Confederate state, outside of Tennessee. A total of 5,526 African-Americans served in Union units raised from the State of Arkansas. The list of Confederate units is shown separately.
- Lists of American Civil War Regiments by State
- Arkansas Civil War Confederate Units
- Southern Unionists
- United States Colored Troops
- Thomas A. DeBlack "Civil War through Reconstruction, 1861 through 1874 ", The Encyclopedia of Arkansas History and Culture, Accessed 25 November 2013, http://www.encyclopediaofarkansas.net/encyclopedia/entry-detail.aspx?entryID=388
- Gladstone, William A., United States Colored Troops, p. 120
- Dyer, Frederick H. (1959). A Compendium of the War of the Rebellion. New York and London. Thomas Yoseloff, Publisher. LCCN 59-12963.
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- Barnes, Kenneth C. (1998). Who Killed John Clayton? Political Violence and the Emergence of the New South, 1861–1893. Durham, NC: Duke University Press.
- Bears, Edwin C. (1990). Steele’s Retreat from Camden and the Battle of Jenkin’s Ferry. Little Rock: Eagle Press.
- Brothers in Arms: Civil War Exhibition. Old State House Museum Online Collections. Brothers in Arms Collection (accessed May 18, 2011).
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- Christ, Mark K. Civil War Arkansas, 1863: The Battle for a State. Norman: University of Oklahoma Press, 2010.
- Clayton, Powell. The Aftermath of the Civil War in Arkansas. New York: Negro University Press, 1969.
- Dougan, Michael B. Confederate Arkansas: The People and Politics of a Frontier State in Wartime. Tuscaloosa: University of Alabama Press, 1976.
- Finley, Randy. From Slavery to Uncertain Freedom: The Freedmen's Bureau in Arkansas, 1865–1869. Fayetteville: University of Arkansas Press, 1996.
- Pearce, Larry Wesley. The American Missionary Association and the Freedmen in Arkansas, 1863–1878. Arkansas Historical Quarterly 30 (Summer 1971): 123–144.
- Pearce, Larry Wesley. The American Missionary Association and the Freedmen's Bureau in Arkansas, 1866–1868. Arkansas Historical Quarterly 30 (Autumn 1971): 242–259.
- Pearce, Larry Wesley. The American Missionary Association and the Freedmen's Bureau in Arkansas, 1868-1878. Arkansas Historical Quarterly 31 (Autumn 1972): 246–261.
- Richards, Ira D. The Battle of Poison Spring. Arkansas Historical Quarterly 18 (Winter 1959): 338–349.
- Unknown. The Camden Expedition, March 23–May 3, 1864. MA thesis, University of Arkansas, 1958.
- Singletary, Otis. Negro Militia and Reconstruction. Austin: University of Texas Press, 1957.
- Staples, Thomas. Reconstruction in Arkansas, 1862–1874. New York: Columbia University Press, 1923.
- Steele, Phillip, and Steve Cottrell. Civil War in the Ozarks. Gretna, LA: Pelican Press, 1993.
- Stith, Matthew W. Social War: People, Nature, and Irregular Warfare on the Trans-Mississippi Frontier, 1861–1865. PhD diss., University of Arkansas, 2010.
- Taylor, Orville. Negro Slavery in Arkansas. Fayetteville: University of Arkansas Press, 2000.
- Thompson, George H. Arkansas and Reconstruction: The Influence of Geography, Economics, and Personality. Port Washington, NY: Kennikat Press, 1976.
- Trelease, Allen W. White Terror: The Ku Klux Klan Conspiracy and Southern Reconstruction. Baton Rouge: Louisiana State University Press, 1971.
- Worley, Ted R. The Arkansas Peace Society of 1861: A Study in Mountain Unionism. The Journal of Southern History 24 (November 1958): 445–456.