Sempill Mission

[6] The mission consisted of 30 members, who were largely personnel with experience in naval aviation and included pilots and engineers from several British aircraft manufacturing firms.

[8] Although civilians, the Japanese granted active commissions to all members of the mission and a suitable uniform was provided.

Technicians became familiar with the newest aerial weapons and equipment-torpedoes, bombs, machine guns, cameras, and communications gear.

[6] While naval aviators were trained in various techniques such as torpedo bombing, flight control and carrier landing and take-offs; skills that would later be employed in the shallow waters of Pearl Harbor in December 1941.

His espionage work helped Japan rapidly develop its military aircraft and its technologies before the Second World War.