Tied down by Wright Brothers patent issues and a non-committal government, aviation design, development and production in the United States was stymied leading up to World War 1. As such, American air power during the conflict was stocked with many European types when the nation committed to war in 1917. Some homegrown developments eventually did materialize though American aces were born largely through piloting British- and French-originated fighters.
There are a total of 48 World War 1 U.S. Aircraft (1917-1918) in the Military Factory. Entries are listed below in alphanumeric order (1-to-Z). Flag images indicative of country of origin and not necessarily the primary operator. Immediate pre-war and post-war types are also included in this listing.