Expeditionary warfare, a military force dispatched to fight in a foreign country; Military formations with Expeditionary Force in their name include: . The American Expeditionary Force Siberia (AEF Siberia) was a United States Army force that was involved in the Russian Civil War in Vladivostok, Russian Empire, during the end of World War I after the October Revolution, from 1918 to 1920.. President Woodrow Wilson's objectives for sending troops to Siberia were as much diplomatic as they were military. AMERICAN EXPEDITIONARY FORCES, the American troops serving in Europe during World War I.When the United States declared war on Germany following President Woodrow Wilson's ringing address to Congress, the country found itself without plans for organizing a force that would be capable of offensive action in modern warfare. Beginning in April 1917, the United States (US) army rapidly transformed from a diminutive constabulary force to a 4 million man draftee army, from which was formed the 2 million strong American Expeditionary Forces (AEF) that decisively tipped the balance of power on the Western Front to the Allied cause in late 1918. A.e.f. It wasn't that it hadn't beaten European powers before. definition, American Expeditionary Forces; American Expeditionary Force. This is the British English definition of expeditionary force.View American English definition of expeditionary force. World War I was the first time in American history that the United States sent soldiers abroad to defend foreign soil. Textual Records: Headquarters general correspondence, issuances, and historical file, 1918-19. AMERICAN EXPEDITIONARY FORCES. American Expeditionary Forces definition: the troops sent to Europe by the US during World War I | Meaning, pronunciation, translations and examples The American Expeditionary Forces (AEF) were the United States Armed Forces sent to Europe in World War I. During the United States campaigns in World War I the AEF fought in France alongside French and British allied forces in the last year of the war, against Imperial German forces. Photograph. Discontinued upon withdrawal of last American military units, August 5, 1919. It had. Mark E. Grotelueschen; Doctrine under Trial: American Artillery Employment in World War I Greenwood Press, 2001; Hallas, James H. Doughboy War: The American Expeditionary Force in World War I (2000) Heller Charles E. Chemical Warfare in World War I. Prints and Photographs Division, Library of Congress. The American Expeditionary Forces (AEF) consisted of the United States Armed Forces sent to Europe under the command of General John J. Pershing in 1917 to help fight World War I . The American Expeditionary Forces [General John Joseph Pershing, head-and-shoulders portrait, facing front, in uniform]. See more. American Expeditionary Force Persian Gulf (1979–1980 Iranian Conflict); American Expeditionary Forces: to France (1917–1919); American North Russia Expeditionary Force (1918–1919) Redesignated American North Russia Expeditionary Forces, September 12, 1918, and AEF, North Russia, April 9, 1919. Change your default dictionary to American English. In some ways, the American Expeditionary Forces marked the beginning of the United States as a superpower. c1919. The American Experience, 1917-1918. It wasn't that the United States hadn't won wars before. American Expeditionary Forces in World War I. During the United States campaigns in World War I the AEF fought in France alongside French and British allied forces in the last year of the war, against German forces. 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