Description
On a yellow shield with a 1/8 inch (.32 cm) blue border, 2 9/16 inches (6.51 cm) in height and 2 inches (5.08 cm) in width overall, a blue millrind throughout.

Symbolism
The millrind 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 millrind stands for the vital and varied support furnished by the organization.

Background
The shoulder sleeve insignia was originally approved for the 1st Support Brigade on 11 February 1966. It was redesignated for the 21st Support Command on 15 October 1976. The insignia was amended to provide an addendum to be worn with a tab inscribed “AMF (L)” immediately above it by personnel of Headquarters Company, Allied Command, Europe Mobile Force (Land Component) on 17 February 1984. It was redesignated retroactive to 16 July 2007, for the 21st Sustainment Command with the description updated and amended to delete the authorization to wear the “AMF (L) tab. (TIOH Dwg. No. A-1-410)