A native of Braddock, Pennsylvania, Boyle was raised and educated in Baltimore, and served in the National Guard while still in high school.

He served with the 3rd Armored Cavalry Regiment at Fort Meade, Maryland, and on the faculty at the Command and General Staff College, followed by attendance at the United States Army Airborne School.

In retirement, Boyle operated a beef cattle farm in Mitchells, Virginia and was involved in several Culpeper County charitable and civic causes.

[2][3] He was raised and educated in Baltimore, and graduated from Forest Park High School in 1931, where he was a member of the track and field and football teams.

[4] In the late 1920s and early 1930s, Boyle served as a private in the Maryland National Guard's 113th Ambulance Company, a unit of the 104th Medical Regiment.

[5] In 1930, he competed for an appointment to the United States Military Academy (USMA) at West Point available to members of the National Guard.

[10][11] Following U.S. entry into World War II, in June 1942 he was assigned to Fort Rucker, Alabama, where he assisted in organizing the first air base security training group, which instructed specialized battalions in tactics against parachute troops.

[10] From late 1943 to January 1944, Boyle attended the United States Army Command and General Staff College at Fort Leavenworth, Kansas.

[10] After graduating, he joined the staff of Supreme Headquarters Allied Expeditionary Force (SHAEF), where he was responsible for T-Force activities in the European theatre.

[10][12] He then served for three years on the faculty at the Command and General Staff College, followed by attendance at the United States Army Airborne School.

[10] After his service in Laos, Boyle was assigned to Fort Shafter, Hawaii as operations officer (G-3) of United States Army Pacific and promoted to major general.

[15] He also served as president of the Mitchells' Ruritan Club and on the board of directors for the Culpeper Regional Hospital and the Piedmont Environmental Council.