( CNN ) -- Best-selling author and director Sebastian Junger says experiencing the existence of U.S. troops ' experience in Afghanistan was like being `` on Mars . '' Junger documented the reality of an Army platoon as its soldiers lived , fought and died at one of the most dangerous postings in the U.S. military , a 15-man outpost called Restrepo in Afghanistan 's Korengal Valley . It 's the focus of Junger 's new feature-length documentary , also named `` Restrepo . '' The outpost , Junger told CNN 's Campbell Brown in an interview Thursday night , was hellish . `` The first time I was up there we were attacked four times in one day . No running water , they did n't bathe for a month at a time . No internet , no phone , no electricity at first , '' he said . Junger said that after a few weeks at their base in Italy , the platoon 's members just wanted to get back to Restrepo . `` What was going on up there was brotherhood , very different from friendship . Brotherhood , you do n't even have to like the guy , but if he 's your brother , you 'll protect him , you 'll die for him . They all felt that way . '' While `` Restrepo '' is not a political film , Junger does believe NATO troops are making progress in Afghanistan , with violence in the country at a 30-year-low . `` Sixteen thousand Afghan civilians have died because of NATO combat operations in Afghanistan since 2001 -- a horrifying number , but it pales comparison to the civilian deaths in the '90s . Four hundred thousand Afghan civilians died in the '90s ... The question is , does the world have the staying power to see it through . ''
Author and film maker Sebastian Junger documented existence of Army platoon in Afghanistan . Platoon was assigned to one of the military 's most dangerous outposts , Restrepo . Junger 's new feature-length documentary is `` Restrepo ''