21st Theater Army Area Command

Worn from:
14 February 1966 - 27 September 1974.

Re-designated:
Twenty-first Support Command.
Worn from:
27 September 1974 - 1989.

Re-designated:
Twenty-first Theater Army Area Command.
Worn from:
1989 - Current.

The mill-rind is the iron reinforcement fixed in the center
of a millstone to support the stone as it revolves on its axle
when grinding wheat. It is used in heraldry as a symbol of support.
With the additional reference to wheat, the "staff of life,"
the mill-rind stands for the vital and varied support furnished by the organization.