A late medieval weapon of war originally intended for close combat action. It was designed to deliver heavy damage against well-armored opponents through sheer blunt force. Though some adapted it as a versatile polearm weapon instead by giving it a longer handle.
Real life war hammers are comparable in size with a regular carpentry hammer, though with a longer handle and often a spike opposite the blunt head to pierce armor. This tag can also be applied to huge fantasy weapons depicted simply as an oversized hammer/sledgehammer.
