Otto Heinrich Warburg was a German physiologist, medical doctor, and Nobel laureate. He served as an officer in the elite Uhlans (cavalry) during the First World War, and was awarded the Iron Cross for bravery. He was the sole recipient of the Nobel Prize in Physiology or Medicine in 1931. In total, he was nominated for the award 48 times over the course of his career. The Nobel Prize in Physiology or Medicine 1931, announced October 29, 1931. Otto Warburg, “for his discovery of the nature and mode of action of the respiratory enzyme”. Otto Warburg: born 1883, Freiburg im Breisgau, Germany. Wiki link Data: the Nobel Foundation (CC0).