HIV/AIDS has assumed an endemic dimension that everyone’s perception is important to tackle the scourge. This led the quest for HIV/AIDS knowledge and risk-related behaviours of the military personnel in Enugu Nigeria. They belong to high risk groups for HIV infection and there was paucity of such study amongst them. HIV/AIDS is a leading health problems in the developing countries Nigeria inclusive; the projections of annual deaths caused by AIDS has increased in Nigeria from less than 50,000 in 1999 to about 170,000 in 2007 and the number of Nigerian children orphaned as a result of parental AIDS deaths is projected to be near 1.2 million in 2007. Many army personnel in this book reported participating in high risk sexual behaviors,which may increase their risk of acquiring and spreading HIV/AIDS despite the overall relatively high knowledge level about HIV/AIDS transmission and prevention. This book was written for people around the world for cautiousness about HIV/AIDS; especially the army personnel.