This report of Phase II of a two-phase research project designed to investigate reasons for drug use summarizes interview information concerning military job performance effects of drug use, and attitudes toward and knowledge of drug treatment and rehabilitation among servicemen. Major reasons given for the initial use of marijuana in the military were curiosity and enjoyment. Differences in attitudes toward drug use and drug abuse control were found between careerist and non-careerist enlisted men. Awareness of local drug rehabilitation facilities was low, although awareness of DoD and VA programs was higher. (Author)