Донская армия
The 1st Cossack Volunteer Cavalry Regiment was a volunteer of Don Cossack cavalry regiment that served in the Don Army during the Russian Civil War. The unit was formed in March–April 1918 by Colonel Alexei V. Kravtzov to serve with the forces of Don Army in the opening stages of Russian Civil War. Included to the Army Corps of Gen. Tatarkin on May 19.