Returning to the United States as a corporal, he entered flight training at the Marine Flying Field, Miami, Florida. He was designated an aviator June 5, 1919, and commissioned a second lieutenant five days later. That October, he began his first tour of expeditionary duty as a member of Squadron "D," Marine Air Forces, 2nd Provisional Brigade, in Santo Domingo. He returned to the United States in February 1920, to enter the Marine Officers Training School, Marine Corps Base Quantico, Virginia.