The character has mastered the many forms of the longsword.
The character knows how to leverage their strength with a longsword using the hilt of their weapon or a well placed thrust to overcome their foe’s armor. When making Combat Style (Strength) tests to wield a longsword in two hands the character may choose to replace the Slashing quality with Crushing (1).
The character also knows that speed often triumphs over strength, and can take maximum advantage of quick precise blows to bring down an opponent. When making Combat Style (Agility) tests to wield a longsword in two hands the character may choose to use their Agility bonus in place of their Strength bonus for the purposes of the Slashing quality.
Additionally, when the character takes a Defensive Stance action while holding a longsword in two hands they gain an additional +10 to the next parry made before their next Turn.