[2] On order, it deploys to support theater opening, distribution, and Reception, Staging, Onward Movement & enable Integration (RSO&I) functions.

The command came to include the 47th Area Support Group with a major depot located at RAF Burtonwood, Cheshire, in the United Kingdom, stockpiling POMCUS equipment.

After the dissolution of the Soviet Union, U.S. forces in Europe began a reduction in personnel to accompany the reduced threat.

Authorizations for both military and civilian positions were decreased substantially and, in 1993, the grade of the 21st TAACOM commander was returned to major general.

Throughout this evolution the 21st has retained the lineage and honors, distinguishing flag (colors), and distinctive unit badge and shoulder sleeve insignia of the "FIRST IN SUPPORT!"