 Complete the following phrase:  Chamberlin earned a bachelor of science at Oregon Agricultural College now Oregon State University in 1915, and graduated from the School of Military Aeronautics at University of California, Berkeley, on August 1, 1917. He passed Reserve Military Aviators test on October 20, 1917 and was commissioned First Lieutet in January 1918, with 141st Aero Squadron. During World War I he served in England, France, and Italy. He twice flew the English Channel delivering planes from Paris to London. He performed reconnaissance and photography work during the St. Miheil and Argonne offensives. In the second day of the 