How do you upgrade generals?

[Captain Tman]

Okay, been playing Renaissance era as Spain for a while, it's 1445 AD and I would very much like to upgrade my early chivalric type general's bodyguards to late bodyguards on armored horses. How do I retrain them, what conditions need to be met to do this? Thanks.

[DaVinci]

I'm afraid it's not possible atm..
It needs a revision of the concerning era-campaign files.
Remember, the era campaigns are beta's, or call it work in progress (wip).
The era files (5 campaigns) will get with the time of the ongoing mod development unique files in all possible aspects.
But since SV is working alone on this, you can imagine how long that can last to get all 5 campaigns into an accurate shape.
Nonetheless the ChivII mod is probably one of the most historical accurate ones within the released M2 medieval mods.