Paul Kern: unable to sleep
Paul Kern (died 1955) was a Hungarian soldier who was shot in the head by a Russian soldier in 1915 during World War I. The bullet removed part of his frontal lobe. Rather than killing him, this made him unable to sleep.
At the outbreak of World War I, Kern volunteered as a cadet in the Hungarian army. He was placed in command of a company of shock troops. While with this company, he was awarded a medal for bravery. A year later, he was transferred to another company where he was rewarded for his defense of an important sector despite the rest of his company being shot down.