Jack Warner Hill (1928–1987) was a member of the United States Marine Corps who bears the distinction of holding Marine Corps enlisted service number one million (1,000,000). Hill served a total of two enlistments in the Marine Corps, one during World War II, resulting in a discharge due to lying about this age upon enlistment (similar to Calvin Graham), and the other briefly before the outbreak of the Korean War. After his military service, Hill lived until 1987, when he was killed in an automobile accident.