More to explore:
Gene Hackman Hackman joined the Marine Corps at age 16 and served four-and-a-half years as a field radio operator
Harvey Keitel Keitel joined the Marine Corps at the age of 16 and served in Lebanon.
Drew Carey Carey joined the Marine Corps Reserve in 1980 and served for six years
President & Mrs. Obama
Bea Arthur Multiple reports say that Arthur was one of the Marine Corps' earliest female recruits
Shaggy Shaggy served in Operation Desert Storm as a Marine Corps Field Artillery Cannon Crewman.
Ed McMahon McMahon flew 85 combat missions as a Marine Corps fighter pilot, serving during WWII and the Korean War.
R. Lee Ermey Ermey enlisted in the Marine Corps in 1961, serving as drill instructor until departing for a 14-month stint in Vietnam in 1968 and serving two tours in Okinawa, Japan.