Fury within

Each time a model with this tactic makes a melee attack:
•If that model's unit made a charge move,
was charged or performed a Heroic Intervention
this turn, add 1 to that attack's wound roll.
•On an unmodified wound roll of 6, improve the Armour Penetration characteristic of
that attack by 1.
This is cumulative with the bonus from Assault Doctrine if it is active for your army.