In A Morbid Taste for Bones, the whole fight with Columbanus.
In the trial by combat in One Corpse Too Many, Hugh Beringar takes great care to give Adam Courcelle a chance while the latter is fighting dirty. Beringar wins.
In Saint Peter's Fair, Emma takes down Corbiere in his own manor, after pushing her hand in hot coals to make sure a crucial letter is burned.
At one point in the series, Sister Magdalen (aka. Avice of Thornbury) orchestrates the defense of her convent from Welsh raiders. Not only are the raiders repelled without harm to the nuns, but they even manage to capture one of them as a prisoner. Hugh Beringar, when asked to escort Magdalen back to the convent, even said that he'd rather give her generalship of the forest.