I am posting regarding James Kirk's rank in STII to STIV.
My understanding is that Kirk was promoted to Rear Admiral and held that rank at the time of TMP.
However, by STII he appears to wear the rank insignia of a full admiral (admiral with four bars).
He holds this rank until his demotion in STIV.
Whilst in dialouge, Kirk is only ever referred to as 'Admiral', there are appears to be a promotion between TMP and STII.
Given the hypothetical 15 year gap between TMP and STII (as proposed by the ST Chronology), then it would seem reasonable that Kirk achieve full admiral rank in that time.
Just curious, is there any background of behind the scenes information to back this up?