The Paras have a hard-earned reputation for skill and bravery. So when best-selling war historian Patrick Bishop joined 3 Para for their second tour of Afghanistan he heard - and saw first-hand - the searing reality of what fighting the Taliban insurgency now means.
This is an incredible story of tough battles, tough soldiers - and tough questions about the changing nature of the war in Afghanistan. These are the fighting elite who have volunteered to be at the sharp end - but do they have the backing and resources to do the job properly? What do the soldiers think of their mission in Afghanistan? And is there any end in sight?