This Directive: (1) Establishes policy, assigns responsibilities, and prescribes procedures for members of the Department of Defense against validated biological warfare threats, and prioritization of research, development, testing, acquisition, and stockpiling of biological defense vaccines under 10 U.S.C. (2) Provides vaccination guidance that focuses exclusively on defense against biological warfare threats and complements immunization requirements for naturally occurring endemic disease threats outlined in DODI 6205.2, October 9, 1986 and AR 40-562/NAVMEDCOMINST 6230.3/AFR 161-13/CG COMDTINST M6230.4D, "Immunizations and Chemoprophylaxis," November 7, 1988. (3) Addresses peacetime and contingency requirements for immunization against biological warfare threats against U.S. personnel. (4) Designates the Secretary of the Army as the "DoD Executive Agent" for the DoD Immunization program for Biological Warfare Defense. (5) Provides direction on levels of acquisition and stockpiling of biological defense vaccines and prioritizes research and development efforts in defending against current and emerging biological warfare threats.