You can now find rangers ready to fight!
Now on non-town maps rangers will appear at random to battle once per hour. The number of rangers on a map differs from map to map. If you see a ranger there and do not want to battle, avoid getting close. Once they spot you the battle will begin. While battle is in testing, they will not give exp but this is not permanent. Once all the kinks are worked out of battling they'll give exp if you win.