How did the Spanish-American War influence the American Army?

The Spanish-American War had a significant impact on the American Army by establishing it as an expeditionary force. This conflict marked a turning point where the United States transitioned from a primarily continental army focused on domestic defense to one capable of projecting power abroad. The war demonstrated the necessity for the Army to operate away from U.S. shores, engage in overseas campaigns, and adapt to new tactics and strategies needed for rapid deployments and military operations in different environments.

The experiences gained from the war emphasized the importance of mobility and the ability to sustain operations far from the homeland, leading to structural and strategic changes within the Army. This shift laid the groundwork for the U.S. military's involvement in future conflicts around the world, reinforcing the concept of an expeditionary mindset that would characterize American military engagements in the 20th century and beyond.