He then enlisted in the U.S. Army field artillery during World War II, becoming a captain and fighting in Southeast Asia.
He enrolled in the University of Oklahoma (OU) from 1937 to 1941, where he earned the Bachelor of Arts degree in Business Administration.
Early in World War II, Doolin enlisted in the U. S. Army, attaining the rank of captain in the field artillery and fighting in the China/Burma Theater.
[2] Doolin had a private law practice in Alva until 1963, then moved to Lawton, where he remained until 1972, when Governor David Hall named him to fill a vacancy on the state supreme court.
[2] He represented District 9, which includes Caddo, Canadian, Comanche, Cotton, Greer, Harmon, Jackson, Kiowa and Tillman counties.