how old do generals get

[Productivity]

I would imagine but there is probably some form of equation that it runs every turn, and as a general gets older the probabilities get higher. Given the amount of repetition going on over the entire community, it wouldn't surprise me if you had a couple that would seem to be really old.

[Es Arkajae]

Once your general reaches 60 years old you should take out all the good retinue ancillaries you can and give them to other family members and dump all the bad retinue members (if you have any) on him