Currently I am enrolled in an evil campaign involving mass amounts of undead taking over the world, yada yada yada. The party is single individuals within the ranks of these undead (the small portion that are intelligent and living) and so insignificant that if they died... they'd only be food for the army. However, we have small roles to play as all classes do and I was considering playing an Anti-Paladin 3 / Cleric 1 (End goal level AP3/Cleric17) for the purposes of commanding undead and being a slaver to them all. My progress so far involves a Cleric Variant called an Undead Lord.
http://www.d20pfsrd.com/classes/core-classes/cleric/archetypes/paizo---cler ic-archetypes/undead-lord
This Undead lord provides my evil cleric with a few good starters such as the command undead feat as a bonus feat. That being all fine and dandy n all, I looked more into it and simply added improved turning, extra turning, etc. I have yet to find anything that would allow my anti-paladin levels and cleric levels to stack for the purposes of commanding "X" amount of HD undead. It's only = to my cleric level, but I feel there has got to be some feat that either increase my cleric level for commanding OR some feat to have "Paladin + Cleric levels" Stacking for this same purpose. I'm diving through all my books and having no luck finding such a feat. if anyone has any clue as to where I could find such a feat, either from pathfinder or 3.5, I would be very thankful... as you have possibly helped future D&D players and myself.