Conversely, his film, “Hell and Back Again,’’ is an ingenious artistic disturbance. It’s a combat film and a coming-home movie, chiefly about a Marine named Nathan Harris, who’s critically wounded in Afghanistan and struggling to re-adjust to both the brutal drabness of civilian life in North Carolina and the depressing state of his lower body. Harris’s condition has provided the basis of the stories and movies and books. But Dennis’s film attempts something few documentaries have: to inhabit the psyche of its subject.
Harris is a small, sleepy, increasingly addled guy. His hip was shattered, he’s taking at least nine prescription medications, and, as he recovers, he uses a walker to get around. Cruising a Walmart parking lot with his wife, Ashley, he can sense that this monotonous anticlimax could last the rest of his life and says he’d truly rather be in Afghanistan hunting for something besides a spot to leave the car. Inside the store, he glides through the aisles on a motorized cart. He stops to admire digital cameras and makes Ashley pretend she’s at a photo shoot. Then in the video-game section, something appears to happen.
Harris stares up into a looming case, where a copy of “Call of Duty 4’’ awaits, and, for several seconds, the camera lingers on his gaze, which turns distant. As he stares yonder, we hear his voice on the soundtrack, then we’re back in Afghanistan on a beautiful-looking day hunting insurgents. This is Dennis’s innovation: a documentary war flashback. Who knows whether what we’re seeing is actually what’s on Harris’s mind in that moment. But he’s given Dennis and Dennis’s editor, Fiona Otway, the license to imply as much. Suddenly, ordinary deployment footage is recast as living memory.