We are saying to soldiers 'thou shalt kill, if ordered', but remember the general rule is 'thou shalt not kill'.
Psychologist James Thompson believes that by expecting soldiers to do our dirty work, we put them in an impossible situation. He knows the effect it can have on professionals trained to kill. Some hate it, some become addicted, but every soldier is affected. How do squaddies in the front lines live with these conflicting moral standards? Three ex-soldiers in the British army talk about the impact of fighting and killing.