Look at this evidence!
The report is titled: "Is Military Research Hazardous to Veterans' Health? Lessons Spanning Half a Century," Committee on Veterans' Affairs, United States Senate, 103rd Congress, 2nd Session, S. Prt. 103-97, U.S. Government Printing Office, Washington, D.C., 8 December 1994, ISBN 0-16-046291-6.
The relevant passage is at the top of page 35, under the heading: "RECORDS OF ANTHRAX VACCINE ARE NOT SUITABLE TO EVALUATE SAFETY."
Quote:
"Although anthrax vaccine had been considered approved prior to the Persian Gulf War, it was rarely used. Therefore, its safety, particularly when given to thousands of soldiers in conjunction with other vaccines, is not well established. Anthrax vaccine should continue to be considered as a potential cause of undiagnosed illnesses in Persian Gulf military personnel because many of the support troops received anthrax vaccine, and because the DOD believes that the incidence of undiagnosed illnesses in support troops may be higher than that in combat troops."[Italics mine]