Description
A blue triangular shield 2 1/2 inches (6.35 cm) in height by 2 1/8 inches (5.40 cm) in width, a Lorraine Cross within an orle. Cross and orle silver gray and the elements of each 1/8 inch (.32 cm) in width.

Symbolism
The Lorraine Cross was adopted as the insignia because it is a symbol of triumph and the 79th Division fought victoriously in the Lorraine Campaign during World War I.

Background
The shoulder sleeve insignia was originally approved for the 79th Division by telegram on 16 November 1918. It was officially announced by the War Department on 23 June 1922. It was redesignated for the 79th Command Headquarters (Divisional) on 14 October 1963. The insignia was redesignated for the 79th US Army Reserve Command on 22 April 1968. It was redesignated effective 1 December 2009, for the 79th US Army Reserve Sustainment Support Command. (TIOH Drawing Number A-1-126)