A-heroes

Sonya Sonya - enhances both the attacking and defensive potential of cavalry troops. It increases their damage and defense, making the cavalry impenetrable. She also increases the attack power of all troops under her command, which gives her an advantage in every battle. With its balanced skill set, Sonya is a great choice for players who rely on cavalry but want to maintain flexibility for other troops.
Elena Elena - enhances the damage and critical damage of ranged troops, which can sometimes give an advantage on the battlefield. It also increases the defense and health of these units, making it useful for supporting a strong line of ranged troops. However, her abilities are not as unique and powerful as those of higher-level heroes, making her a temporary choice.
Ching Shi Ching Shi - is a hero who focuses on infantry. It enhances the damage and defense of troops, especially when fighting against cavalry and non-player enemies. Its ability to reduce the cost of endurance for marches is useful for those who want to conserve resources in battle. Despite this, her abilities are not as strong in the late game, and she should be replaced with more powerful heroes.
Sullivan Sullivan - does additional damage each turn, which increases the effectiveness of all the heroes. It enhances the protection and health of infantry, and can also block some of the damage received, which increases the survival rate of troops. However, due to the accidental triggering of his abilities and limited arsenal of skills, Sullivan is inferior to more powerful heroes.