World War I had the highest casualty rate, highest cost, and most severe consequences of any previous war of the 'history. One of these consequences was the desolation of traditional values ​​among the soldiers who survived the war. This loss created what is known as the “Lost Generation,” the generation that came of age during the war and, due to the traumatic experiences they faced, found themselves confused and without purpose. From this generation emerged many notable writers who described different views and aspects of the Lost Generation. The most prominent writers of this era were F. Scott Fitzgerald and Ernest Hemingway. Two of their best-known novels, The Great Gatsby and The Sun Also Rises respectively; reflect the author's experience during World War I, and despite their seemingly contradictory depiction of life in the early 1920s, both are stories that exemplify the lost generation. The Lost Generation In an article from Montgomery College (nd), they stated that the phrase "lost generation" was coined by Gertrude Stein who, after a mechanic working on her car did a poor job, reportedly heard the mechanic say that the generation that had been in the war was “a lost generation”. She then used this term to describe the group of people who rejected American values ​​of the 1920s. Specifically, people who were in their 20s and 30s and who had participated in the war. Among prominent authors of the period, the Lost Generation defined a sense of moral loss and apparent aimlessness in 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 exp...... 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 Also Rises depict the Lost Generation, from different perspectives. From the American perspective, The Great Gatsby is a reflection of the lost generation. One where the exuberance of the Jazz Age served 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, more specifically in Paris. Europe was home to the largest concentration of the Lost Generation, as many expatriates left for Europe because they had been too transformed to return home. From there, I learned a lot about the Lost Generation and 1920s literature, and this study led to further research into how other 1920s authors depicted the Lost Generation..