Star Trek: The Next Generation
During other episodes including (TNG: Future Imperfect) the TNG crew had a different way to show rank. The ranks were shown on a different communicator badge with the Starfleet logo and four long bars behind the logo, closely separated vertically. Each bar that was lit would represent a rank. The rank of admiral was shown with the bars on the combadge being full white. There was also another communicator (TNG: All Good Things Part I & II) with an outline of a Starfleet logo and two long vertical trapezoids, each separated horizontally.