So, before I even ask that question, I suspect that the variety of the Imperial Guard regiments, each with their own structures, makes this a dumb question, what sort of varieties of rank do the Imperial Guard have? If I was in a base on Kulth, would I be answering to a Colonel, a General, or what? The top ranks, I suspect, might not be legitimate ranks, with a Lord Militant, or something, though he or she was probably a General other days of the week, but what range of titles do they go through? For maybe more what I care about, if the range of possibles might be huge, limit it to Cadia, my favorite regiment.
As an aside, if my character picks up the Commander Advanced Specialty, or whatever, from Hammer of the Emperor, are they still "Sergeants", or do they get promoted to Lieutenant, or something higher? I know many Sergeants do the whole "I work for a living" schtick, kinda flipping the Eagle to Officers above them, but could a PC get to be an Officer-level soldier? For every Sergeant Bastonne and G. Sgt. Harker, there is a Colonel Straken and LC Creed, but I don't know if they all went from PFC to General, or skipped the grunt stage and started in "Officer school." I suppose there would be an Officer rank where one stops moving with a unit, and remotely controls several, like a CCS controlling 5 Infantry Squads via vox, but I'm not sure where that's at. Thanks.