An American author of fiction and non-fiction, he is most famous for The Green Berets (1965) and The French Connection: A True Account of Cops, Narcotics, and International Conspiracy (1969). His other works include The Khaki Mafia (1971) and The Fifth Estate (1973).
He was a nose gunner on bombing runs over Europe during World War II. For his bravery, he received an Air Medal. In 1949, he graduated from Harvard.
His nonfiction book, The Devil to Pay, was based on the early years of Fidel Castro's Cuban presidency. A hotel employee in the Caribbean at the time, Moore witnessed Castro's rise to power firsthand.
He grew up in Concord, Massachusetts. His father, Robert Lowell Moore, was the co-founder of the Sheraton hotel chain.
He studied at Harvard alongside Robert F. Kennedy. Using Kennedy's connections, he was able to gain access to the Green Berets and subsequently publish his 1965 work on the subject of the elite group.