At graduate school, he meets a Scottish girl named Moira Kinross, a fellow genetics student with whom he falls in love. The two agree to get married, but soon, Xavier is drafted into the Korean War. He carves himself a niche as a soldier in search and rescue missions alongside Shadowcat's father, Carmen Pryde, and witnesses Cain's transformation into Juggernaut when he touches a ruby with an inscription on it in an underground temple. During the war, he receives a letter from Moira telling him that she is breaking up with him. He later discovers that Moira married her old boyfriend Joseph MacTaggert, who abuses her.