How do you make good moral decisions when you have no time to make them? This is a question that troubled Giles Fraser after he met soldiers who had served in Afghantistan. The moral codes Giles had studied required a lot of time for thinking and reflection but you simply don't get that when deciding whether to shoot on the battle field. This led Giles to think about the Greek philosopher Aristotle and his system of virtue ethics – a way of thinking about morals that emphases character rather than rules. Giles talks to former SAS soldier Andy McNabb and philosopher Nancy Sherman on how do you distinguish right from wrong in today's 'battle space' where the rules of engagement are no longer clear. And whether the answer is to be in a 2500 year old piece of Greek thinking. This programme is part of a week of programmes.