Ernest Hemingway at age 19, photo taken in Milan, Italy, 1918. After high school Hemingway enlisted in WWI. He left for the Italian front in 1918. He served in a volunteer ambulance unit. He was wounded and decorated by the Italian government with the Italian Silver Medal of Bravery. During WWII, he was at the Normandy landing, the liberation of Paris and several other key moments as a war correspondent.