Medals are necessities for Rank and Title. Meanwhile, medals can be used to reward your heroes and persuade opponent's. By attacking valleys, you may acquire medals by chance. The possibility of getting Cross Medal is relatively high by attacking Lake and Flat. Of cause, you can get this item in Squire Box which you can buy in the Shop.
If you conquer valley successfully, you will acquire some medals by chance. The higher level the valley is, the higher possibility you get medal.
Cross Medal 1