I picked up this bit of info on B&C, that afaik wasn't mentoned here yet:

Quote Originally Posted by Angelust, on B&C
Oh, and here's an interesting tid-bit - If your IC has a RETINUE, than it is no longer considered an IC in combat but becomes like a unit UPGRADE. I'm considering brushing up my Inquisitors....
Quote Originally Posted by Angelust
ie with retinue bought from their description, ie inquisitors and grand masters, count as an upgrade in combat like vet Sargent
Can someone confirm this? Sounds quite useful.