The following Websites are among those providing access to United States government documents in military history. With each Website look for its search function as well as for sections of the Website providing links to information collections, reports, and other documents.
U.S. Army Center for Military History
http://www.history.army.mil/
"The Center of Military History (CMH), which reports to the Administrative Assistant to the Secretary of the Army, is responsible for the appropriate use of history throughout the United States Army. Traditionally, this mission has meant recording the official history of the Army in both peace and war, while advising the Army Staff on historical matters."
CMH Website Search. U.S. Army Center of Military History
CMH General Resources and Research search. U.S. Army Center of Military History
Research information gathered by the U.S. Army Center of Military History. To search by conflict, choose the Research by Conflict and Time Period option, then choose the specific war or era of interest.
Combined Arms Research Library (CARL) Digital Library
http://cgsc.cdmhost.com/cdm/
“The collections contained within the Combined Arms Research Library Digital Library are largely composed of digital versions of paper documents from the Combined Arms Research Library collections and student papers produced at the US Army Command and General Staff College."
Library of Congress. Military Battles and Campaigns
https://www.loc.gov/collection/military-battles-and-campaigns/about-this-collection/
