The term "Allied Campaigns" refers to military operations conducted by the Allied Powers during major conflicts, particularly in World War I and World War II. These campaigns involved coordinated efforts among various nations, including the United States, United Kingdom, Soviet Union, and others, to defeat common enemies such as Germany and Japan. In World War II, notable Allied campaigns included the D-Day invasion of Normandy and the Pacific Campaign against Japan. These operations were crucial in turning the tide of the war, leading to the eventual defeat of the Axis Powers and the establishment of post-war peace agreements.