Complex sentence: In August 1918 Vaughn was transferred to the 17th Aero Squadron, United States Air Service where he flew the British Sopwith Camel powered by a Le Rhône rotary engine and carried two synchronized Vickers machine guns.
Split into simpler sentences: In August 1918 Vaughn was transferred to the 17th Aero Squadron, United States Air Service where he flew the British Sopwith Camel. The aircraft was powered by a Le Rhône rotary engine and carried two synchronized Vickers machine guns.