Starfleet uniform (2278-2350s)

On 31/10/2278, at James T. Kirk's personal request, the white and grey uniforms were changed by Starfleet into red, more militaristic uniforms with shoulder-clips and metal breast and belt-buckle insignias (TOS novel Wagon Train to the Stars).

By 2280, the grey uniforms were phased out for good (TOS movie Star Trek II: The Wrath of Khan).

Belts, colour-coded undershirts and the insigniaed belt-buckle were removed from the uniform by circa. 2340 (TNG episode Yesterday's Enterprise). Another minor change occurred five years later (TNG episode Family). Five years after this, the wrist band rank was removed, whilst the shoulder-clip and tunic were lengthened slightly (TNG novel The First Virtue).