34th and 10th Medium Tank Battalions; 306th Heavy Tank Battalion; Company D, 85th Reconnaissance Battalion; and Maintenance and Service Companies, 34th Armored Regiment, consolidated, reorganized, and redesignated 27 March 1957 as the 34th Armor, a parent regiment under the Combat Arms Regimental System .
Withdrawn 16 February 1988 from the Combat Arms Regimental System and reorganized under the United States Army Regimental System .