Shield Smash

Benefit: Attack with the shield at +2 To Hit in Grapple range only. Bash damage is 1 for wicker or leather shields, 1-4 for wooden shields, 1-6 for iron or bronze shields. Shields with a spike can also attack for 1-6 Pierce damage with a D6 Pierce critical.
Bashing with a shield in a tournament, from the Freydal manuscript circa 1512