Jiang Wan
In 238, Jiang Wei accompanied the Shu regent Jiang Wan to Hanzhong Commandery near the Wei–Shu border. After Jiang Wan was appointed Grand Marshal (大司馬) in April or May 239, he appointed Jiang Wei as a Major (司馬) under him. He also put Jiang Wei in charge of a separate force to make incursions into Wei territory.