Nowadays, plastic surgery is seen as a pretty basic, relatively safe procedure - but that hasn't always been the case. The first plastic modern advanced surgery on record was performed during World War I, and at the time, it was very risky and nearly killed the man who went under the knife. Walter Yeo was injured in battle and would have had to live out the rest of his life with a severely marred face if it hadn't been for one daring doctor by the name of Sir Harold Gillies. Together, the two of them would attempt a completely revolutionary surgery that would give Yeo back his life (and his face), and secure Gillies a place in the history books.