Sangin district in Afghanistan's Helmand province has been the deadliest posting in the British Army's modern history: four years of fighting the Taliban there cost 106 British lives, including Staff Sergeant Olaf Schmidt, who was killed defusing bombs and posthumously awarded the George Cross. Journalist Ben Anderson, who filmed with British troops in Sangin in 2007, returns after the British withdrawal to see how the US Marines who inherited the district are coping. He embeds with Lima Company as they patrol the same roads and compounds the British once held, dodging improvised explosive devices and taking casualties in a fight that looks unchanged from the one he filmed years earlier. There is no narration standing outside the story here; Anderson's camera stays with the Marines through firefights and losses, and the footage does the arguing. With the war in its tenth year and Sangin still contested, the film leaves open the question of what the British deaths there actually bought.