A gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a gold crane in its vigilance encircled by a gold ribbon bearing the motto "VIGILANTE SALIS" in black letters.
An old fable explains that cranes maintain a set watch all the night long and have their sentinels. These stand upon one foot, and hold a little stone within the other, which by falling from it, if they should chance to sleep, might awaken them, and reprove them for their negligence. While these watch, the others sleep, couching their heads under their wings. The motto translates to "Safety By Watching."
The distinctive unit insignia was originally approved for the 191st Infantry Brigade Headquarters on 24 November 1939. It was redesignated for the 191st Infantry Brigade on 7 March 1967.