How do you obtain Cormag in fire emblem the sacred stones?

In "Fire Emblem: The Sacred Stones," you can obtain Cormag by recruiting him during Chapter 12. After defeating the enemies, approach Cormag with a character who has a high Charisma, like Vanessa or Eirika. He will join your party after a short dialogue. Make sure to take the time to talk to him before finishing the chapter to secure his recruitment.