In 1964 Muhammad Ali converted to Islam and joined the black Muslim group. He nicknamed himself Cassius X (because of his birth name) but then went on to change it to Muhammad Ali. In 1967 Ali was called upon to serve in the military during the Vietnam War, but refused on the grounds that he was a practicing Muslim minister and his beliefs kept him from serving. This action led to Ali being suspended from boxing and to him being arrested on felony charges. During his case against the justice department, Ali was stripped of his titles and was not allowed to box at all. He lost three years of his career to this. He lost his case and focused on philanthropy.