United States Army balloon squadrons and companies organized under the Aviation Section, U.S. Signal Corps and served overseas with the United States Army Air Service before and during World War I. There were also French, British, and German balloon corps.

The Aviation Section, Signal Corps, was the aerial warfare service of the United States from 1914 to 1918, and a direct statutory ancestor of the United States Air Force. It absorbed and replaced the Aeronautical Division, Signal Corps, and conducted the activities of Army aviation until its statutory responsibilities were suspended by President Woodrow Wilson in 1918. The Aviation Section organized the first squadrons of the aviation arm and conducted the first military operations by United States aviation on foreign soil.