Defender of the Crown Cheats

While the game is loading, hold the K key until it finishes. You are then given 2048 knights for offense/defense.

When sending forth your campaign army, make sure to transfer all your troops in it and don't leave anything in your (home) castle. If your castle is being attacked, it is magically defended by the same amount of troops your campaign army is consisting of. You can transfer the remaining castle troops to your campaign army and effortlessly increase you army this way.