During World War II, Tarpley served in combat as a platoon leader with the 66th Infantry Division in Europe. After the war, he commanded a company at Fort Riley.[1][2]
After graduating from the Command and General Staff College, Tarpley was assigned to the faculty there. He then served a postwar tour in South Korea.[2]
After graduating from the Army War College, Tarpley commanded a battalion of the 5th Infantry from 1963 to 1966 and the 2nd Brigade, 25th Infantry Division in 1966 in Vietnam.[1][2]
Promoted to brigadier general, Tarpley received rotary-wing flight training. He then served as a deputy commanding general at Fort Lewis from 1969 to 1971.[1][2]
^ abcdef"Class of 1944—Register of Graduates". Register of Graduates and Former Cadets 1802–1971 of the United States Military Academy. The West Point Alumni Foundation Inc. 1971. p. 539. Retrieved 2022-07-17.