"A gruesome warhammer head atop a long pole makes this weapon a very effective in a variety of strikes and with great range, while suffering slightly in the speed department."
The Pole Hammer is a pole arm available only for the Vanguard. It is a very long Warhammer with a spike on its tip. It does blunt damage with its overhead and horizontal strike, and strong pierce damage with its stab. It is an excellent anti-Knight weapon due to its damage typing.
It was implmented in the Janurary 2013 patch.