The 5th Medical Brigade is a United States Army Reserve unit headquartered in Birmingham, Alabama, and the imagery on its DUI alludes to its locale in four different ways. First, the scarlet saltire, or “X” shape, is taken from the Alabama State flag; second, the red peak at the base of the cross is a stylized reference to Red Mountain, near the city of Birmingham; the flames over the cross allude to the industrial flames which light up the city at night; and the encompassing scroll surrounding the insignia suggests a magic circle to recall the city’s nickname of “Magic City.”