Military expeditions are organized missions carried out by armed forces to achieve specific objectives, such as securing territory, responding to threats, or providing humanitarian aid. These operations can vary in scale and duration, ranging from small tactical missions to large-scale campaigns involving multiple branches of the military. Historically, military expeditions have played a crucial role in shaping nations and borders. Notable examples include the Napoleonic Wars, where Napoleon Bonaparte led extensive campaigns across Europe, and the American Civil War, which featured numerous expeditions aimed at controlling key regions and resources.