I don't think they work in keep sieges.
Yeah, prolly considered NPCs, not monsters.
Hmm, remembered my appeal and checked my mail. Not much of an answer (rather lame actually), but because they choose the word NPC, I guess it doesnt apply because they arent considered monsters indeed.
Dear Customer,
Thank you very much for your appeal. Unfortunately we were unable to contact you ingame regarding your appeal.
The NPC's around keeps do have abilities however I am unable to give you any detailed information on this.
For any further queries don't hesitate to contact us via the ingame Ticket system.
Thank you for playing War.
Kind Regards,
WAR European Customer Support Team
Your Appeal:
I was wondering about the Tome of Knowledge tactics. For example: do the greenskin tactics also apply to greenskins in/around a keep, or are they considered NPCs?
If it does apply to those too, are there also tactics for dark elves/chaos?
[edit]sod it, read it again and they understood the question wrong it seems. think they thought i asked about the skills of the monsters, not the tome of tactics skills. I will leave it to a native speaker to ask the question again then...

But prolly earlier conclusion is right.[/edit]