The best way to make a War Cleric seem like a War Cleric is to change what its spells do when compared to other Cleric types casting the same spells, as follows:
- War Cleric cures should be considerably worse than those from other Clerics - they're more about breaking people than fixing them
- War Cleric combat-enchancing spells* e.g. Prayer should be better than those from other Clerics
- Give War Clerics some spells that only they get, and take away some other spells they have now
* - and the act of casting any of these combat-enhancing spells should require the caster to either charge into melee or already be engaged in melee - leading from the front rather than the rear. You just lose your attack in the round you're casting, but can still defend and - best of all - cannot be interrupted by anything short of complete incapacitation.
Yes this is a lot of work, to make quite a few spells each have two (or more, if you also do this for other Cleric types) versions, but it's well worth it.
Lanefan