Biological aggression, and the questions of prevention and intervention that it raises, must be integrated into civil protection plans, for the possible use of such weapons cannot be totally dismissed. Below are some broad excerpts from a summary of the work carried out by Surgeon Lt. Colonel Mailloux. This document defines the term "biological weapon" applies to any cellular agent intended to destroy human, animal or plant life. Somes aspects treated in it are Criteria for choosing a biological agent, Possible biological agents; Spreading and penetration of biological agents; The influence of the environment; Military aspects; The role of the Health Service in biological warfare (detection, identification, protection, decontamination, disinfection, treatment and therapeutic and hygiene measures)