Air Service, United States Army Arthur Edmund Easterbrook (November 4, 1893 – July 24, 1952) was an American aviator who started his career as a World War I flying ace credited with five aerial victories.

He was using a wheelchair and living in a Veterans Administration facility until his death by heart failure on July 24, 1952.

Because of intense aerial activity on the opening day of the St. Mihiel offensive, Lieutenant Easterbrook, observer, and Second Lieutenant Ralph E. De Castro, pilot, volunteered to fly over the enemy's lines on a photographic mission without the usual protection of accompanying planes.

Notwithstanding the low-hanging clouds, which necessitated operation at an altitude of only 400 meters, they penetrated 4 kilometers beyond the German lines.

Attacked by four enemy machines, they fought off their foes, completed their photographic mission, and returned safely.