The Veterans History Project of the American Folklife Center collects, preserves, and makes accessible the personal accounts of American war veterans.

The Betty H. Carter Women Veterans Historical Project (WVHP) documents the contributions of women of all branches of the United States military and the American Red Cross since World War I. The WVHP includes a wide range of source material, including oral histories, photographs, letters, diaries, scrapbooks, uniforms, and posters, as well as published works.

The Congressional Medal of Honor Society includes historical, and research collections that focus on Medal of Honor history and the recipients of the Medal of Honor across all military branches; collections include oral histories, research material, correspondence, photographs, and ephemera.

The Naval Historical Collection (NHC) is the depository for College archives, manuscripts, oral histories, and special collections relating to the history of naval warfare and the history of the Navy in Narragansett Bay. Established in 1969 and located in Mahan Hall, the NHC's primary source material are of interest to naval historians, scholars, and students of American military and diplomatic history, Naval War College students, faculty and staff, and the general public.

Archives Branch collects those Official Records mandated by SECNAV M-5210.1 to be sent to the NHHC, including the immediate office files of the Chief of Naval Operations (CNO) and the Vice Chief of Operations, key subordinate offices of the CNO, Aircraft Accident Reports, and the records of the NHHC. Other official records collected include ships’ deck logs as mandated by SECNAV M-5210.1 and OPNAV Instruction 3000.7B, and the Command Operations Reports/Command History Reports from Navy operational forces, shore establishments, aircraft squadrons, and individual ships as mandated. . other collection areas include personal papers, reference files, biographical files, and the oral history collection.

The Special Collections & Archives Department of Nimitz Library contains over 30,000 rare books, 400 manuscript collections, 100,000 photographs, and other documents, as well as the official records (archives) of the U.S. Naval Academy.

The United States Army Military History Institute, U.S. Army Heritage and Education Center, Archives Branch’s collections consist primarily of materials documenting the service of Soldiers in the United States Army, enlisted and commissioned, donated to the U.S. Army Military Institute and the U.S. Army Heritage and Education Center. Historical periods covered are from the French and Indian War through current operations, with a strong focus on the U.S. Civil War, World War II, Korean War, and the Vietnam War. Access to the collections catalog is through the U.S. Army War College Library portal.

The Archives Branch, USMC History Division, contains approximately 11,000 linear feet of archival material and is the primary holder of Marine Corps archival materials outside of the National Archives. It is the designated repository for Marine Corps Personal Papers Collections and the Marine Corps Command Chronology Program. The archive holds semiannual command Chronologies for all Marine Corps units from 1976-present and command historical reports for units deployed to combat from 1917-present. The Personal Papers Collection contains nearly 6,000 personal collections (1775-present), including collections of nearly all former Commandants and numerous senior and company-grade officers and NCOs. Other areas of note are the archive’s collections on the development of amphibious warfare, instruction and research conducted by the Marine Corps Schools, and its substantial photographic, cartographic, oral history, and film/video holdings.

The US Army Medical Department Center of History and Heritage Archival collection encompasses 12,000 square feet of storage space with 6,000 linear feet of archival materials, a non-circulating reference library, and 2,000 oral histories. In addition to the reading room located at the US Army Medical Department Museum, the archival staff also oversees an off-site storage facility. Access to these materials is open to all members of the military and to the general public who wish to conduct research.

The Vietnam Center and Archive collects and preserves the documentary record of the Vietnam War and supports and encourages research and education regarding all aspects of the American Vietnam Experience.

The VNCA has an extensive repository of research materials related to the Vietnam War. We also have an active oral history program, host conferences to encourage current scholarship and discussion about the war, and have a large digital repository of research materials, the Virtual Vietnam Archive.

The Center for American War Letters Archives actively preserves and promotes the research of original correspondence and other materials from all American conflicts, from the American War for Independence through the present day. This includes letters, postcards, V-Mail, and email, or any other medium upon which correspondence was kept, as well as supplementary materials, including photographs, ephemera, or realia sent to or from American service members, their families, and all those involved in American conflicts at home or abroad. Also found in the collection are materials not sent but collected during wartime, including journals and diaries, newspaper clippings and scrapbooks, as well as alternate forms of media, including audio and video recording.  

The Air Force Historical Research Agency is the primary repository for US Air Force historical documents. The Agency's collection, begun in Washington, DC, during World War II, moved in 1949 to Maxwell Air Force Base, the site of Air University, to provide research facilities for professional military education students, faculty, visiting scholars, and the general public. It now consists of over 70,000,000 pages devoted to the history of the service and represents the world's largest and most valuable organized collection of documents on US military aviation.

The United States Army Corps of Engineers, Office of History collection includes material with a strong concentration in the history of water policy and engineering; the Panama Canal; general files of approximately 1,500 archival boxes of basic reference materials in the fields of military construction, military and combat engineering, and water resources, especially navigation, flood control, environmental regulation and cleanup, recreation, and emergency operations; and approximately 240 personal papers collections of prominent Engineers.