You know how to defend yourself against a certain class of weaponry.
Benefit: Choose a weapon group from the fighter’s weapon training class ability list (except natural weapons). You gain a +2 dodge bonus on AC when an opponent attacks you using a weapon from that group. If you also have the weapon training class feature in the selected group, your dodge bonus from this feat increases to +3.
Special: You can select this feat more than once. Its effects do not stack. Each time you select this feat, it applies to a different weapon group.
Pathfinder Roleplaying Game Ultimate Combat. © 2011, Paizo Publishing, LLC; Authors: Jason Bulmahn, Tim Hitchcock, Colin McComb, Rob McCreary, Jason Nelson, Stephen Radney-MacFarland, Sean K Reynolds, Owen K.C. Stephens, and Russ Taylor.