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Heavy drinking and associated problems are relatively common in young men, including those in a military setting. This article explores characteristics of alcohol intake and associated difficulties and their relationship to a self-report of the usual intensity of response to alcohol in a sample of U.S. Marines. Two questionnaires related to demography and alcohol use histories, along with a simple, 12-item self-report measure of the usual number of drinks to experience an effect (the Self-Rating of the Effects of Alcohol, SRE) were administered to 1320 U.S. Marines. The sample had an average age of 22 years, 78% were Caucasian, and 92% were enlisted personnel. The relationships and correlations among drinking characteristics and problems and the usual number of drinks for an effect were determined. These subjects drank an average of 6 days per month, consuming an average of almost six drinks per drinking day, and reported more than three times per month in which they consumed six or more drinks per occasion. Consistent with studies of other populations, the SRE measures of intensity of response to alcohol showed a positive correlation with both drinking practices and problems, with the latter remaining significant even after controlling for recent drinking practices. The prodigious level of alcohol intake and associated problems, along with the SRE scores, indicate that the Marine Corps personnel are at especially high risk for alcohol-related life problems. These data also support the potential usefulness of the SRE both in identifying individuals likely to have more severe alcohol profiles and in educating individuals regarding their levels of risk for alcohol abuse and dependence. [ABSTRACT FROM AUTHOR]