American Expeditionary Forces
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The American Expeditionary Forces was a formation of the United States Armed Forces on the Western Front during World War I, comprised mostly of units from the U.S. Army. The AEF was established on July 5, 1917, in France under the command of... Wikipedia
Role: Command and control
Commander in Chief: General of the Armies John J. Pershing
Leader: General John J. Pershing
Active: 1917–1920
Branch: Army
Chief of the Army Air Service: Major General Mason M. Patrick
Commander of the Services of Supply: Major General Francis J. Kernan