認識番号
Service numbers 1,700,000 to 1,799,999 were set aside for female enlisted personnel of the 1960s and 1970s while 1,800,000 to 2,000,000 was used by male enlistees. In 1965, with male service numbers running out due to a rise of enlistments during the Vietnam War, the Marine Corps extended enlisted service numbers a final time to 2,800,000. The highest Marine Corps service number reached was slightly above 2,699,000 before the numbers were discontinued in 1971. After this point, all Marine Corps service records converted to Social Security numbers as the primary identification means for service members.