A gold color metal and enamel device 1 1/8 inches (2.86cm) in height overall consisting of two blue stars joined at the horizontal arms within a gold arch at the top composed of a keystone between four staggered wedge shapes on each side, the keystone bearing a red stylized Rose of Sharon, and upon a red scroll encircling the sides and base of the device the inscription "MISSION FLEXIBILITY" in gold letters.
Gold, suggestive of buff, and red are colors used for Support. The keystone and arch from the Independence Gate, Seoul, Korea, signify the unit's activation and service in Korea. The Rose of Sharon is the flower of Korea. The single flower and the nine segments of the arch allude to the numerical designation of the organization. The two stars are symbolic of guidance and enterprise, and are dark blue, the National color of the United States. The stars also refer to the command and control of all assigned and attached units; to the planning and directing the provision of specified combat services support; to the coordinated planning and supervision of physical security and rear area protection activities when employed in the Army service area; and to the providing of staff advice and planning assistance to supported tactical command and combat service support activities.
The distinctive unit insignia was originally authorized for the 19th General Support Group on 23 July 1969 and redesignated for the 19th Support Brigade on 19 December 1974. On 7 September 1976, it was amended to revise the symbolism. The insignia was redesignated for the 19th Support Command on 14 April 1978. It was redesignated with description updated for the 19th Sustainment Command on 1 June 2006.