Virtue of Heroism [BRETONNIA]

'Known as the Slayer of Monsters, Gilles fought and killed many of the great beasts that stalked the Massif Orcal, mounting their heads on the walls of his fastness.'
Against large Targets, and if armed with a non-magical weapon, the Knight has the Killing Blow special ability. This overrides the normal limitation of Killing Blow only affecting man-sized models.