War hammers were developed as a consequence of the prevalence of surface-hardened steel on wrought iron armor of the late medieval battlefields during the fourteenth and fifteenth centuries. The surface of armor had become as hard as the edge of a blade, so blades tended to ricochet. Swords and battleaxes were likely to give only glancing blows, losing much of their impact, especially on the high curvature of helmets. A war hammer could deliver the full force of a blow to the target.
War hammers, especially when mounted on a pole, could damage without penetrating armor. In particular, they transmitted their impact through even the thickest helmets and caused concussions. Later war hammers often had a spike on one side of the head, making them more versatile weapons. A blade or spike tended to be used not against helmets but against other parts of the body where the armor was thinner and penetration was easier. The spike end could be used for grappling the target's a Show More