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History of the United States Army - Wikipedia
Chapter 9: The Civil War, 1861 - U.S. Army Center of Military …
Civil War - Research by Conflict and Time Period - U.S. Army …
The regular army before the Civil War, 1845-1860 - Library of …
United States Army | History, Generals, Battles, Flag, Structure ...
Red, White, and Black: The US Army in the West 1866-1891
Those Who Served: The U. S. Army on the Frontier
The Post-Civil War Frontier American Army