A gold color metal and enamel device 1 1/4 inches (3.18 cm) in height consisting of a maroon heart surmounted by a white cross potent bearing at the center a blue star of five points, all above a gold scroll inscribed VALOR AND WORTH in maroon letters.
The colors maroon and white are for the Medical Department. The heart and the colors red, white and blue refer to the activation of the 139th Medical Group at Kansas City, Missouri, the city which is nicknamed the Heart of the United States of America. The heart also alludes to medical care and compassion. The cross potent stands for the unit. It is a device frequently used for medical organizations, being formed of four T-shaped arms which are heraldic representations of crutches. The star, symbol of guidance, refers to the Brigades mission of command, control and supervision of its assigned battalions. In addition, the five points of the star allude to the organizations home area and initial assignment to the Fifth United States Army.
The distinctive unit insignia was originally approved for the 139th Medical Group on 15 January 1969. It was redesignated for the 139th Medical Brigade with the description and symbolism updated effective 16 September 2011.