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Video by Staff Sgt. Neal Uranga

World War I: Prelude to War

Defense.gov

April 5, 2017 | 1:18

More than 100 years ago, the United States Congress voted to declare war on Germany and brought America into World War I. German use of unrestricted submarine warfare and the release of “Zimmermann” telegrams had pushed the U.S. into Europe’s “Great War.”

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