The Operation Two Cities Badge is a cosmetic item for all classes. It is earned by completing your first mission of the "Operation Two Cities" Tour of Duty in Mann Up mode. It tracks a player's progress through the various Mann vs. Machine missions. The badge's level will increase based on the amount of times you've completed the challenges in Mann Up mode.
November 21, 2013 Patch (Two Cities Update)
- [Undocumented] The Operation Two Cities Badge was added to the game.