Which aircraft was the first to be deployed in combat by the U.S. military?

The correct answer highlights the legacy of the Wright brothers, who were pivotal in the development of military aviation. While the Wright Flyer itself was not used in combat, the innovations and principles they established laid the groundwork for future military aircraft. This legacy includes not only the advancements in aerodynamics and aircraft design but also the understanding of how aviation could be utilized in warfare.

The actual first aircraft deployed in combat by the U.S. military is often considered to be the Curtiss JN-4 "Jenny" during World War I, although it was a product of the legacy established by the Wright brothers. Their work fundamentally changed how air power would be integrated into military operations, demonstrating the potential of aircraft for reconnaissance and eventually for combat roles.

The other options presented do not accurately encapsulate the historical context or significance of the Wright brothers' contributions to military aviation. The Wright Flyer was an early experimentation aircraft and not utilized for combat. The F-14 Tomcat and the P-51 Mustang, while iconic military aircraft, came much later in aviation history and are not associated with the pioneering efforts of the Wright brothers. Therefore, recognizing the legacy they left behind is crucial in understanding the evolution of U.S. military aviation.