High PD kinda useless.

[Ironhawk]

Hadrian_II said:
I think PD is very effective against the AI as it tends to send every turn lots of troops to attack but never enough to win. My PD killed about 400 enemy troops each turn (in ca. 5 provinces). I had a PD strength of about 60+ and supported it with mages (i used trollkings and each of them got in the hall of fame after 10 turns with 500 kills each )

Yeah PD is well-used as renewable fodder. Tho when playing agains the AI, I found that the best use of PD was convincing the AI that you were "strong". Putting heavy PD on aggressive AI borders made them think twice about attacking you, and it seems the AIs are technically at peace until they make thier first attack on you or vice versa.