List of military aircraft of the United States (1909–19)

This list of military aircraft of the United States (1909–1919) includes prototype, pre-production and operational types operated by the United States Army and United States Navy during the period prior to and during World War I, prior to the establishment of a numerical designation system. During this period, aircraft used by the U.S. military forces were referred to by their manufacturers' designations.

For Army and Air Force aircraft designated after 1919, see List of military aircraft of the United States. For U.S. Navy and Marine Corps aircraft post 1922, see List of military aircraft of the United States (naval).

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