This skill helps you do extra damage with a one handed bludgeon. It is automatically in effect while you are fighting.
This is an important skill for any frontrow guild wishing to use bludgeons. The strength of a bludgeon lies in its ability to stun more easily than other weapons. However, strength of the character and weight (mostly from size) of the bludgeon play a large impact in stunning as well. So even if you're using a bludgeon, if you're fairly weak and/or small, don't be surprised if you don't stun well.