Book excerpt: This publication gives a history of biological warfare (BW) from the prehistoric period through the present, with a section on the future of BW. The publication relies on works by historians who used primary sources dealing with BW. In-depth definitions of biological agents, biological weapons, and biological warfare (BW) are included, as well as an appendix of further reading on the subject. Related items: Arms & Weapons publications can be found here: https://bookstore.gpo.gov/catalog/arms-weapons Hazardous Materials (HAZMAT & CBRNE) publications can be found here: https://bookstore.gpo.gov/catalog/hazardous-materials-hazmat-cbrne