1975, and was discharged or released with anything other than a dishonorable discharge; was discharged or released from active duty for a service-connected disability if any part of such active duty was performed between August 5, 1964, and May 7, 1975." In 2004, the U.S. Census Bureau reported there were 8.2 million Vietnam-era veterans who were living in the United States, with 2.59 million of them being reported to have actually served "in-country." More than 58,000 U.S. military personnel died as a result of the conflict. That includes deaths from all categories including deaths while missing, captured, non-hostile deaths, homicides, and suicides. The Department of Veterans Affairs recognizes veterans that served in the country, then known as the Republic of Vietnam, from February 28, 1961, to May 7, 1975, as being eligible for such programs as the department's Readjustment Counseling Services program, also known as the Vet Centers. The Vietnam War was the last American war in which the U.S. government employed conscription. American servicemen who served between January 9, 1962 - May 7, 1975 are presumed to have been exposed to herbicides, such as Agent Orange. PTSD Many Vietnam veterans suffered from post-traumatic stress disorder (PTSD) in unprecedented numbers, with PTSD affecting as many as 15.2% of Vietnam veterans. Referred to as the first "pharmacological war" in history, the U.S. war in Vietnam was so called because of the unprecedented level of psychoactive drugs that U.S. servicemen used. The U.S. military had routinely provided heavy psychoactive drugs, including amphetamines, to American servicemen, which left them unable to process adequately their war traumas at the time. The U.S. armed forces readily distributed large amounts of "speed" (stimulants), in the form of Dexedrine (dextroamphetamine), an amphetamine twice as strong as Benzedrine, to American servicemen. Soldiers embarking on long-range reconnaissance missions or ambushes, according to standard military instruction, were supposed to be given 20 milligrams of dextroamphetamine for 48 hours of combat readiness. But this instruction for heavy drugs was rarely followed: the drug was issued, according to veterans, "like candies," with little or no attention paid to the dose and frequency of administering the drug. In the period 1966–1969, the U.S. military provided 225 million tablets of stimulants, mostly dextroamphetamine, according to a 1971 report by the Select Committee on Crime of the U.S. House of Representatives. According to a member of a long-range reconnaissance platoon, the drugs "gave you a