This Day in American Military History

24 September 1918: Lt. j.g. David S. Ingalls became the U.S. Navy’s first ace. During a test flight in a Sopwith Camel, he spotted an enemy plane over Nieuport, Belgium, and, with another Sopwith Camel, attacked and scored his fifth aerial victory.

Brandus, Paul. This Day in U.S. Military History (pp. 231-232). Bernan Press. Kindle Edition.