War

US Military Digital Collections guide

Revolution and Protest Online

American Revolution

Revolutionary War and Early America

Civil War (US)

Images of the American Civil War: Photographs, Posters, and Ephemera

Illustrated Civil War Newspapers and Magazines

The American Civil War: Letters and Diaries

World War I

World War I: A Resource Guide lists online sources at the Library of Congress and beyond.

CENDARI Transnational Archive Directory is a large database of archival descriptions from over 1,000 institutions, European and worldwide. It is focused on medieval and World War I resources.

The First World War: Two sections: Personal Experiences, Propaganda and Recruitment.  Largely British.  Some material from the Hoover Institution Library.

Industrial Mobilization in Britain and the Ministry of Munitions, 1915-1918

Medicine and World War 1 (National Library of Medicine) offers over 1,500 federal, state, and local government publications. Includes government reports, first aid manuals, informational pamphlets, and recruitment materials.

Mission Centenaire 14-18 includes maps, photos, oral histories, post cards and other documents about the First World War from French archives.

Propaganda Poster Digital Collection (Washington State University) includes 520 World War I and World War II posters.

Western European Theater Political Pamphlet Collection 1894-1918 (Princeton University Library). Topics include the economy, the press, the military, arms, territorial disputes, and others. The collection also includes speeches, sermons, bulletins, calendars, and songbooks. Material in English, German, French, Italian, Russian, and other languages.

Women, war and society, 1914-1918 documents women’s contribution to the war. Includes charity and international relief reports, pamphlets, photographs, press cuttings, magazines, posters, correspondence, minutes, records, diaries, memoranda, statistics, circulars, regulations and invitations. Reproduction of originals from the Imperial War Museum, London.

World War One (British Library) offers over 500 historical sources (together with interpretative essays .

WWI & WWII Posters: UBC Library Digital Collections - Fifty nine posters, broadsides, and ephemera from World War I and II, published in Canada, Belgium,  England, France, Germany, and the United States

Spanish Civil War

La Guerra Civil Española (The Spanish Civil War Collection)

World War II

World War II Internet sites: a vast selection of World War II digital collections online from Bowling Green State University

America in World War Two: oral histories and personal accounts

Service Newspapers of World War Two (US)

The Public Health Film Goes to War: National Library of Medicine

Medicine and World War 2, 1939-1949 A collection of U.S. government documents from the National Library of Medicine

Conditions & politics in occupied Western Europe, 1940-1945 consists of documents from the British National Archives on the German-occupied countries.

Psychological Warfare and Propaganda in World War II: Air Dropped and Shelled Leaflets and Periodicals

Patriotes aux Armes! The Underground Resistance in France, Belgium, Holland, and Italy 1939-1945

World War II, occupation, and the Civil War in Greece, 1940-1949: records of the U.S. State Department Classified Files 

Allied propaganda in World War II and the British Political Warfare Executive.

National socialism, Holocaust, resistance and exile 1933-1945, and Daily reports of the Gestapo Headquarters Vienna 1938-1945 contains about 40,000 primary sources on the National Socialist state and the NSDAP, Nazi ideology and propaganda, National Socialist justice and legislation, on resistance and persecution, and annihilation and expulsion in the "Third Reich".'

World War II, occupation, and the Civil War in Greece, 1940-1949: records of the U.S. State Department Classified Files partment papers in FO 371. Section I: Japanese Imperialism and the War in the Pacific, 1931-1945 -- Section II: Occupation of Japan, 1946-1952 -- Section III: Japan and Great Power Status, 1919-1930.

World War II oral history project focuses on the American home front experience.

La France pendant la guerre 1939-1945 : résistance et journaux de Vichy = Voices from wartime France 1939-1945 : clandestine resistance and Vichy (Archives unbound.) constitutes the sum of the French press that reached Britain during the Occupation of 1940-44. Reproduction of the originals from the British Library.

The Economy and War in the Third Reich, 1933-1944

World War I and Revolution in Russia, 1914-1918

>Post-War Europe: Refugees, Exile, and Resettlement, 1945-1950

Vietnam

Vietnam War and American Foreign Policy, 1960-1975

The Pentagon Papers