Why Lone Survivor fails to adequately convey the tragedy of war

Of the many dramas, documentaries and mockumentaries that have come out of the U.S. war in Afghanistan and both Iraq wars, the most painful is Lone Survivor. The problem isn't political (it would be refreshing to see a film take a fresh position on American foreign policy that wasn't premised on fuzzy, idealistic pacifism) but the sheer iineptitude of Lone Survivor's director-writer Peter Berg.