World War I had the highest casualty rate, highest cost, and most far-reaching consequences of any previous war in history. One of these consequences was the desolation of traditional values ​​in the soldiers who survived the war. This loss created what was known as the “lost generation,” the generation that came of age during the war and, due to the traumatizing experiences they faced, were left confused and aimless. From this generation emerged many important writers who represented different points of view and aspects of the Lost Generation. The most important writers of this period were F. Scott Fitzgerald and Ernest Hemingway. Two of their best-known novels, respectively The Great Gatsby and The Sun Rises; they reflect the author's experience during the First World War, and despite the seemingly contradictory portrayal of life in the early 1920s, both are stories illustrating the lost generation. The Lost Generation In an article from Montgomery College (n.d.), they stated that the phrase "lost generation" was coined by Gertrude Stein who, after a mechanic who had worked on her car did a poor job, is said to have heard the owner of the garage say that the generation that had fought in the war was “une génération perdue” or a lost generation. He later used this term to describe the group of people who rejected the American values ​​of the 1920s. Particularly people who were in their 20s and 30s and had taken part in the war. In prominent authors of the era the lost generation defines a sense of moral loss and purposelessness evident during the 1920s. The term was popularized by being used as a theme in Ernest Hemingway's The Sun Also Rises. The Lost Generation writers also denounced American culture in their writings through themes of exposition... middle of paper... their writings in The Great Gatsby, The Sun Also Rises, and many other literary works they wrote after the war . The Great Gatsby and The Sun Rises also portray the Lost Generation, just from different points of view. The Great Gatsby is a reflection of the Lost Generation from the American point of view. A time when the exuberance of the Jazz Age was used to hide the disillusionment they faced at the end of the war. The Sun Also Rises depicts the lost generation as it was in Europe, particularly Paris. Europe held the largest concentration of the Lost Generation, due to the fact that many expatriates left for Europe because they had been too changed to return home. From this I learned a lot about the Lost Generation and 1920s literature, and this study stimulated further research into how other 1920s authors illustrate the Lost Generation..