From The Heroes of Might and Magic III wiki

Note: Is only in the Armageddon's Blade expansion.

[edit] Biography

As the reigning queen of Erathia, Catherine continues to wage war to secure her homeland's borders and restablish the peace built by her father. However, support for her position is faltering as the country grows weary of war.

[edit] Special Ability

Swordsmen/Crusaders 

Catherine increases the Attack and Defense skills of any Swordsman or Crusader she commands for each level she attains after the 4th level.

[edit] Secondary Skills

Basic Leadership

Basic Offense

[edit] Additional Information

Class: Knight

Gender: Female

Species: Human

Catherine is only available in the campaigns or in standard scenarios if the map-maker has enabled her.