Every soldier is affected by the strain and violence of combat. Most learn to cope or even adapt, some become stronger and tougher, but others develop immediate or delayed reactions that can be psychologically disabling. Historically these have been labelled shell shock, combat fatigue, battle exhaustion, combat stress reaction, post-traumatic stress disorder and most recently operational stress injury. Psychological problems related to experiences in war and other stressful situations are universal, but doctors, patients, governments and the military are constantly changing their ideas about causation, prevention and treatment.Every soldier is affected by the strain and violence of combat. Most learn to cope or even adapt, some become stronger and tougher, but others develop immediate or delayed reactions that can be psychologically disabling. Historically these have been labelled shell shock, combat fatigue, battle exhaustion, combat stress reaction, post-traumatic stress disorder and most recently operational stress injury. Psychological problems related to experiences in war and other stressful situations are universal, but doctors, patients, governments and the military are constantly changing their ideas about causation, prevention and treatment.Every soldier is affected by the strain and violence of combat. Most learn to cope or even adapt, some become stronger and tougher, but others develop immediate or delayed reactions that can be psychologically disabling. Historically these have been labelled shell shock, combat fatigue, battle exhaustion, combat stress reaction, post-traumatic stress disorder and most recently operational stress injury. Psychological problems related to experiences in war and other stressful situations are universal, but doctors, patients, governments and the military are constantly changing their ideas about causation, prevention and treatment.