Gunnery Sergeant C.I. Greenwood,
USMC, is the author of Once Upon a Lifetime.
According to the book description of Once Upon a Lifetime,
it “portrays 22 years in the life of a U S Marine Corps Gunnery Sergeant. The most straightforward, no nonsense book
you will ever read and it is laced with military humor. C. I. Greenwood has captured an epic period in U S Marine Corps history,
distinguishing a unique brand of camaraderie, humor & characteristic traits of Marines serving their Corps and their country
during that epochal time frame. It is a book to be read and reread. Greenwood covers before, during & after 22 years of
Marine Corps life including 5 major battles in Korea while highlighting the breakout of the 1st Marine Division from the Chosin