A gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a white five-pointed star, overall a horizontal gold bayonet, pointed to left below at center a scarlet Greek cross, all within a semi-circular maroon scroll volute at each end and inscribed "LIFE FOR THE WOUNDED" in gold letters, the area below the arms of the star and above the scroll blue.
The Greek cross, a symbol of aid and assistance, represents the organization. The bayonet is symbolic of combat and alludes to the unit's mission of combat support. The single star refers to the unit's headquarters location in Texas. Red, white and blue are the colors of the national flag and also the colors of the state flag of Texas.
The distinctive unit insignia was originally approved for the 117th Combat Support Hospital on 8 December 1976. It was redesignated for the 217th Evacuation Hospital on 25 September 1986. The insignia was redesignated for the 111th Medical Battalion on 12 April 1996.