Ernest Hemingway

This name is probably the most surprising one on this list! Ernest Hemingway achieved many titles and accolades in his lifetime, and his service during the first World War is among the lesser-known ones.

At the age of 18, Hemingway signed up to be an ambulance driver, wherein his primary role was to deliver sweets and other supplies to soldiers. In fact, he even got injured when he came in the line of fire while on duty, and that warranted a hospital stay for nearly six months. Subsequently, he recovered from the injury and returned to his homeland to become a journalist and celebrated writer.