Johnny Carson
Before Johnny Carson was extracting information from other celebrities on The Tonight Show, he was busy extracting information elsewhere. During the Second World War he was responsible with decoding encrypted enemy messages while he was on board the USS Pennsylvania.
J.R.R. Tolkien
Not only is he noted with the awe-inspiring works of The Hobbit and The Lord of the Rings, but he is also known as a World War One hero. Many people have said that his books represented some of the experiences he went through while he served in the trenches of The Great War.