Combat Stress Reaction is a term used to describe feelings of fear, stress, and worry that happen to someone who is in or has been in a war or combat situation. It is normal for people to experience these kinds of feelings and reactions when faced with dangerous situations. When someone is in a war or combat situation, they may feel scared, anxious, or overwhelmed. Combat Stress Reaction is the body's natural reaction to these feelings and can include things like trouble sleeping, feeling jumpy, feeling irritable and angry, having memories of traumatic events, or having nightmares. It is important to know that these feelings are normal and treatment is available to help.