<P> For the first season of TNG, admirals wear a different insignia, consisting of a triangle or stripe resembling gold weave along the right collar; one or two gold pips are sometimes underneath the weave . Three variants are visible in "Conspiracy": Admiral Quinn's insignia has no pips, Admiral Savar's has one, and Admiral Aaron's has two . </P> <P> A Starfleet insignia is worn on the left breast: this also functions as a communicator badge . This combadge insignia was redesigned for the movie Star Trek Generations (the only surviving part of a planned redesign of the uniforms), replacing the oval with a trapezoid with a cutout oval in the center . This new combadge is also used in Star Trek: Deep Space Nine from season three onward, and in Star Trek: Voyager . </P> <P> Cadet ranks are rarely ever seen, with the exception of the various visits from Wesley Crusher to the Enterprise in TNG . As it appears in those instances, it can be surmised that the insignia of a Cadet consists of 1, 2, 3, or 4 copper and black bars, similar to those of a modern Lieutenant in the United States Army . It can also be surmised that if a cadet has 1 bar, he has 1 year at the academy . 2 for 2 years, and so on . </P> <P> Enlisted ranks are seen even less; their insignia are unclear . </P>

What do the different colored uniforms in star trek mean