Career Mastery offers advanced character customization options that will allow you to choose which aspect of your character's career you want to be the most powerful. Masteries can significantly alter your play style and role in Warhammer Online. Each career is given three Mastery Paths to choose from, and you can increase your proficiency in a path by visiting a Career Trainer and selecting from the following options.

• Increase Mastery Level: You can spend a Mastery Point to increase your Mastery Level. This will increase the level of all abilities related to this Mastery Path by one level per point. In addition, you will unlock access to special abilities, Tactics, and Morale Abilities by increasing your Mastery Level.
• Purchase Mastery Ability: You can choose to spend one Mastery Point to purchase unlocked Mastery Abilities.
• Purchase Mastery Tactic: You can choose to spend one Mastery Point to purchase unlocked Mastery Tactics.
• Purchase Mastery Morale Ability: You can choose to spend one Mastery Point to purchase unlocked Mastery Morale Abilities.

In addition, you can also reset your Career Mastery and refund all of your points by choosing the RESPECIALIZE option in the Mastery Training window. Refunding Mastery Points will cost a small sum of money.