galloway was born in omaha, nebraska. he received a bachelor of arts degree from the university of pennsylvania in 1950. after completing reserve officers' training corps program, he was commissioned in august, 1950, serving in the u.s. army, including combat in korea. he was released in august, 1952, to go to medical school, and graduated in 1956, from the university of nebraska college of medicine. he did his internship at nebraska methodist hospital in omaha and his residency in internal medicine at temple university hospital in philadelphia. during his last year, he was the chief medical resident. he was then a fellow and instructor in endocrinology and diabetes at temple, 1960-61.