Tonight's episode (repeated from last year) features surgery which saves the life of a very badly injured Royal Marine: "Series following volunteer doctors and nurses from the NHS and full-time army surgeons as they work to save lives in a front-line hospital in Afghanistan. Despite having practised with re-enactments in the UK, the NHS medics are not prepared for what they will see on the battle ground. Lt Col Pete Davis must keep the wounded alive until they can get to hospital and the care of Major Hugo Gutherie. Gutherie tries to help a marine who may have to have his second leg amputated. Narrated by Robert Lindsay."