The Battle Association is a group in Spirit Tracks.
The Battle Association will post Link a Letter and a prize whenever he reaches a certain Battle Rank.
- ↑ "Here's a package and a letter from...the Battle Association? What's a "battle"? And why does it have its own association? There's so much in the world I don't know about!" — Postman (Spirit Tracks)
- ↑ "You've achieved a battle rank of D and have been registered as an intermediate competitor. To celebrate, here is a prize for you. Enjoy!" — Battle Rank Notice (Spirit Tracks)