In 1918, upon the United States’ entry into World War I, the first major U.S. aviation combat force was created when an Air Service was formed as part of the American Expeditionary Force (AEF). These aviation units, some of which were trained in France, provided tactical support for the U.S. Army, especially during the Battle of Saint-Mihiel and the Meuse-Argonne offensives. This early insignia is known as the first active military marking for combat aircraft from the United States. With the end of the First World War, the AEF’s Air Service was dissolved and the Army Air Service in the United States largely demobilized.
In 1920, the Air Service became a branch of the Army and in 1926 was reorganized into the U.S. Army Air Corps (USAAC). It was then that the USAAC choose a new design for there aircraft.