According to the Encyclopedia, Nog recieved a "Battlefield Commission" in 2374, during the Dominion War. IIRC, he was essentially trapped on the station when war broke out, and quickly demonstrated his value. That would be when he switched uniforms.Originally Posted by tonyg
Since Nog entered the Academy in 2372, I think we can safely say that even after the switch to grey jumpsuits, Sophomores all wore red. In fact, the only cadets we've seen in yellow were all graduating seniors.
I suspect they got their branch colors at the start of their Senior Year, not at the end (just before the Cadet Cruise). But that is just a guess, because I think that "feels right".
I think it is insulting to Starfleet to compare a Starfleet career to working in fast food, but that is a field I know something about (like 15% of the American workforce, my first job was at a chain fast food place).
In that place, there were a lot of different jobs, and you needed to be trained on each of them (Since the training aid was the Station Operations Checklist, training became being SOC'd). Each day when you came in, you might get assigned to any of the jobs you had been SOC'd on; yesterday you worked grill, today you do fries, and tomorrow you'll work register. And while it may have been 3 months since you worked the chicken fryer, if you have been SOC'd on it you might get assigned there.
Now, Starfleet is a little more rigid than that, as they don't rearrange people every day. But I see it as basicly like that: if you have been trained on the CONN, you may find yourself reassigned as a CONN officer.
The US Military's MOS system tends to be more rigid; if your MOS is truck driver,you will either get duty as a truck driver or doing basic tasks (like sweeping) that we assigne to anybody. Even if you know a lot about vehicle mechanics, you won't get assigned as a Vehicle Mechanic without being retrained as a Vehicle Mechanic MOS, at which point we stoip giving you work as a Truck Driver.
For instance, once Worf had made Chief Tactical Officer, he was chosen over any junior OPs officers to become the new head of OPs and take Data's chair on the bridge when Data was presumed dead ("The Most Toys"). This was not presented as being a big deal, but rather the natural and expected order of things.
I guess I am resistant to the MOS analogy because, as I understand it, changing one's MOS is difficult, and represents spending a lot of time getting retrained. It seems in Starfleet, changing one's assigned position may be as simple as asking your immediate superior, and may happen as abruptly as an announcement during your duty shift.
It's changing between branches that seems to be a big deal.