sentences:  In 1918, he received flight instruction at the School of Military Aeronautics at Cornell University, the Aviation Concentration Camp at Camp Dix in Dallas, Texas, and at Chanute Field in Rantoul, Illinois.Hill then accepted a commission as a 2nd lieutenant in the regular Army and served as a flying instructor before receiving instruction as a bombardment pilot.In 1919, Hill served in the Office of the Chief of the Air Corps in Washington, D.C., then in 1920 was ordered to duty with the American Army of Occupation in Germany, where he served as the Engineer Officer of the Air Service Flying Station in Weissenthurm.