'War was serious ... but not that serious.'

People fought in Afghanistan, and people died, but not always in the obvious way. They had been fighting for so long, twenty-three years then, that by the time the Americans arrived the Afghans had developed an elaborate set of rules designed to spare as many fighters as they could. So the war could go on forever. Men fought, men switched sides, men lined up and fought again. War in Afghanistan often seemed like a game of pickup basketball, a contest among friends, a tournament where you never knew which team you'd be on when the next game got under way. Shirts today, skins tomorrow. On Tuesday, you might be part of a fearsome Taliban regiment, running into a minefield. And on Wednesday you might be manning a checkpoint for some gang of the Northern Alliance. By Thursday you could be back with the Talibs again, holding up your Kalashnikov and promising to wage jihad forever. War was serious in Afghanistan, but not that serious. It was part of everyday life. it was a job. Only the civilians seemed to lose.

—Dexter Filkins, The Forever War (2008)