As the director of elaborate fantasy epics like the Lord of the Rings and Hobbit trilogies, Peter Jackson has become known for meticulous attention to detail. Now he has put the same amount of care into making a documentary. With They Shall Not Grow Old, Jackson has applied new technology to century-old World War I footage to create a vivid, you-are-there feeling that puts real faces front and center and allows us to hear their stories in their own words.