After retirement, he settled in Austin, Texas, and attended graduate school at the University of Texas, earning his Master of Arts degree in 1963 – writing a Master's thesis titled "United States Military Intervention in Nicaragua, 1902–1932." He helped organize the Marine Military Academy at Harlingen, Texas, where he served as superintendent and president of the board of trustees from 1964 to 1988. He was a member of the National Rifle Association and wrote numerous articles on firearms for various sporting magazines.
