How did Alan Turing changed the course of World War II and pioneer the
age of computers.  How did he end up being viewed as a national
security risk?

 Please could this answer relate as much as possible to the work he
did with computing and technology and how homosexuality affected
Turing's contribution to computing and how he was treated as a
security risk, his death, his homosexuality as commented upon at
Bletchley Park by Dilly Knox (in the film) and the effect of his
relationship with Christpher Morcom