"Given that illicit drug use is inconsistent with Army Values, one would not expect the presence of multiple and serial drug offenders in the Army. Data for FY 2001 – FY 2009 indicate otherwise.76 Drug testing results reveal that of the total number of Soldiers tested, 3.5% (58,687 of 1,662,004) were positive for illicit drug use (see Table 7, page 50). That includes Soldiers who tested positive one, two or three or more times. When separated into these specific categories, 36,470 (62%) were first time positives, 11,828 (20%) were multiple, and 10,389 (18%) were serial offenders."
"Army Health Promotion, Risk Reduction and Suicide Prevention Report," United States Army (Washington, DC: 2010), p. 77.