There are several ways:
Battlefield experience can be upgraded according to the number of enemies killed, the number of military commanders defeated and the success of military commanders' tactics, and corresponding experience can be obtained after statistics.
School consumption upgrade. After upgrading the school level to full level in the mode of Star, if you are deep enough, you can buy experience and attributes directly. buy buy is willful!
Idle generals can gain experience in training centers. The military commanders who came back from several battles for dialogue training gained some experience and were upgraded.
Idle military commanders can also go to the battlefield with you by setting them as guards. They are actually experienced, so they are also upgrading.
There are so many training methods for this mode. In addition, there are additional experience rewards for completing campaign conditions in free mode, but they are not easy to obtain.
There is still a long way to go to upgrade the monster. If you accumulate slowly, you will get a positive result.
A hymn? If you are crazy and go to extremes, go to the modifier to modify the attributes of the military commander. ...