The Arena is where the greatest fighters duel! You suffer NO loss when you compete in the Arena. You must beat down Arena Guardian before you start to challenge other players. You receive Military Card every time you start a challenge, and you win extra Military Card and higher rank in the Arena if you win the challenge! If you are challenged by other players and you win, you receive one victory with no bonus. If you are challenged by other players and you lose, you lose certain amount of Military Card. The teamed up officer will be apart after one duel. The number one player in the rank of the Arena receives the reward of 500 Military Card every day.