Risking their lives and having to kill the enemy has always been an inescapable reality for any soldier - but since the war in Afghanistan it's also almost inevitable for every officer to have to face this. In the past notions of patriotism and of a 'just war' provided a justification for the taking (and losing) of life. In a new era, how do the cadets face this fundamental challenge as Sandhurst presents the brutal realities of war to a new generation of officers - warts and all.