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World War I - Wikipedia
Researching Individuals in WW1 Records | National Archives
World War I | History, Summary, Causes, Combatants ... - Britannica
The Shock of War | Smithsonian
6 American Heroes of WWI | HISTORY
Military Records | National WWI Museum and Memorial
10 Heroes of World War One | History Hit
Life in the Trenches of World War I | HISTORY
World War I: Diaries and Memoirs - Library of Congress
First World War | National Army Museum