Data on homicides in the military between 1980 and 1992 were reviewed. Data on homicides among active duty military personnel, the military population, and national statistics were obtained from the Worldwide Casualty System, the Department of Defense Manpower Data Center, and the National Center for Health Statistics, respectively. Deaths due to homicide were the fourth leading cause of mortality among active duty military personnel representing 5% of all deaths. The fewest homicides and the highest homicide rate were seen in the Marine Corps. Those younger than 25 years of age accounted for 57% of all of the homicides. Eighty seven percent of the military homicide victims were male and 58% were white. The homicide rates for blacks were higher than those for whites in each service, and the rates for females were higher than those for males. Over 95% of the homicide victims were enlisted personnel. An overall decreasing trend in homicide rates was seen over the 13 year study period, with the highest annual rate seen in 1980. The predominant method of homicide was firearms, followed by cutting/piercing instruments. Females were over ten times more likely than males to be strangled. The risk for homicide among active duty male personnel was less than that for males in the general population, while active duty females were found to be at an increased risk.