What is the role of Conmand-track officers in Starfleet?

By | June 13, 2018

Everyone is familiar with the gold shirts of TOS and the redshirts of DS9/TNG, the ‘command track’ officers, but I’m somewhat confused about how their responsibilities in contrast with ‘operations’, ‘engineering’, security, etc.

Were there roles that command-track officers could occupy that other tracks could not? Obviously, all the main captains of the various shows have been in command colors, but is that coincidence, part of a captain’s uniform, or something else? Were there bridge positions that could not be occupied by a command-track officer?