Clerics who take the War domain can summon the power of their deity to become engines of destruction. They also gain access to spells that improve their battle prowess.
Domain Special Ability and Bonus Spells
Battle Master: The cleric gains a bonus of 1 + 1 per 5 levels to Dexterity, Constitution, Attack Rolls and Damage. As well the cleric gains damage reduction twice the amount. The effect will last for 5 rounds + charisma modifier.