According to Vetron's Guide to Weapons and Armour, the battle hammer has a "9" effectiveness rating, making it one of the strongest weapons.
Hammers made for battle have been seen in the series since Ultima V. From that point onward, their function and high damage stayed the same. They were commonly found in the Sakkhra caves in Savage Empire.
Several special battle hammers appeared over time:
- Juggernaut Hammer - A magical hammer that can be thrown and always return to the wielder; inflicts high damage.
- Hammer of Dedication - Much like the Juggernaut Hammer, but with less destructive power; from the time of the Ophidians.
- Bonecrusher - Found on Pagan; capable of smashing the undead.
Finally, there is the two-handed hammer. It takes great strength to wield it, but the hammer can inflict devastating damage.
The mace is favored by many knights, whereas the two-handed hammer has been used by the mightiest of warriors to deal a crushing blow to the foe.
Between the wrists of a skilled fighter, the two-handed hammer can deliver a shattering blow to the skull or a bludgeoning to the deepest organs. The edge of such a hammer is an effective striker against any exposed area. Turned slightly, the flat side of the head can hemorrhage the tissues beneath a coat of mail. Given its heft and balance, the two-handed hammer is poorly suited for extended fighting in close quarters.