You can combine your own troops, such as Royal Knights, Royal Archers, Royal Pikemen, Royal Cavalry, etc. Deeply understand the principle of mutual promotion and mutual restraint between arms, and form a powerful lineup that effectively restrains the enemy!
Moreover, it is particularly important to reasonably deploy each arm in the appropriate position according to the terrain of the map where the war begins. Place troops to fight against the enemy until the final victory, and command your heroes to prepare for the war.