alan turing
what did he do?
he and his team built a machine to decode german messages in ww2.his machine was called "the bombe"and it decoded messages from "enigma"the german code system
where?
he worked at bletchly park,london.they pretended they were working at a radio system but actually they were working for the war decoding.it was top secret for ages untill finally they let the secret out.
what did they do after?
the bombe worked and they decoded the messages.afterwords they had to burn all the paper and the work that they had spent so much time on.it had to stay asecret.
how to find out more
if you wanted to find out more you could watch the film "the imatation game"where it tells you all about his life!