Senator, astronaut, Marine—John Glenn's many achievements have distinguished him as a great American leader. He became a Marine following the attack on Pearl Harbor and proved himself a highly skilled combat pilot in WWII and the Korean War.
These are my recruits. I will train them to the best of my ability. I will develop them into smartly disciplined, physically fit, basically trained Marines, thoroughly indoctrinated in love of Corps and country. I will demand of them, and demonstrate by my own example, the highest standards of personal conduct, morality, and professional skill.
"Drill Instructor's Creed" as it appeared in the Parris Island "Boot" newspaper, Aug 31, 1956