There is no single explanation of why war causes people to break down. In extreme cases, the impact of trauma is so great that it prevents combatants from returning to the front line. But military training and medical models do not always match up. Group identity may be emphasised in military training, but individual identity is used by psychiatry. This session will look at the changing views of combat demotivation over the last century. From the Remembering War Symposium at Wellcome Collection www.wellcomecollection.org