American Expeditionary Force, Siberia

The American Expeditionary Force, Siberia (AEF in Siberia) was a formation of the United States Army involved in the Russian Civil War in Vladivostok, Russia, after the October Revolution, from 1918 to 1920. The force was part of the larger Allied North Russia intervention. As a result of this expedition, early relations between the United States and the Soviet Union were poor.