After the World War I. a group of known as the "Lost generation" entered literature. They were writers who were influenced by the war, some of they were on the service in the Army like Hemingway or Dos Passos. Their experience resulted in disillusionment. The best were Ernest Hemingway and Francis Scott Fitzgerald.
Ernest Hemingway was awarded the Nobel Prize in 1954 for his famous book the Old Man and the Sea, which is about human strength for fighting both external natural things and bad sides of his character. Hemingway became a journalist after the World War I. A Farewell to Arms is one of the best novels about the World War I. It is a love story of an American Lieutenant in the Italian Ambulance Service and an English nurse. For Whom the Bell Tolls is a psychological picture of war on an episode from Spanish Civil War. One of the best parts of the novel is Robert Jordan's monologue what beautiful place the world is and how much it is worth fighting for. His other famous novels are fiesta, Death in the Afternoon, A Moveable Feast a Islands in the Stream. Hemingway was a master in short story writing.