Over the past decade, we have sent thousands of people to fight on our behalf. But what happens when these soldiers come back home, having lost their friends and killed their enemies, having seen and done things that have no place in civilian life? Through wide-ranging interviews with former combatants, the war correspondent tells the story of our veterans’ journey from the frontline to the reality of return and asks: why do people who are trained to thrive within the theatre of war so often find themselves ill-prepared for peace? He talks to Jamie Hacker Hughes, the PTSD and trauma specialist, Visiting Professor of Military Psychology at Anglia Ruskin University.