What does Jane learn from her encounter with colonel brown

Corporal Brown is the man Jane sees after the end of the war. Corporal Brown is the one who tells her about the end of the war and how she will soon be free and thus she should choose a new name for herself. Corporal Brown suggested the name Jane, the same name as his daughter and tells Jane that she should visit him after the war. Corporal Brown and his invitation is what pushes Jane to leave the plantation.