Shouldn't? Don't see why not. Warfare is a skill designed to increase physical damage, and ranged weapons are physical. Can you not be a soldier or warrior with a ranged weapon?
But let's rephrase the question: Should weapon damage and weapon skills be rebalanced? Yeah. It is a little silly 10 points in warfare and 5 in ranged is on average stronger than the opposite. If they standardised the damage modifiers it'd be a little nicer.
