During the Russian Civil War, the 27th Infantry served in the American Expeditionary Force sent to Siberia in 1918. The troops embarked on the Army transports , and departing Manila on 7 August 1918 and arriving Vladivostok on 15 and 16 August. This campaign has become an integral part of the regiment's history. The tenacious pursuit tactics of the regiment won the respect of the Bolsheviks, who gave them the name "Wolfhounds." This emblem continues to serve as the symbol of the 27th Infantry Regiment. During their time in Siberia, the unit was part of the Evgenevka incident, a face-off between the Wolfhounds and the Japanese Military.