The yelling, the sweat, the thousand-yard stares — these movies either nailed the chaos or missed it. Every service member has a story about navigating boot camp — the sand, the blisters, the broken ...

They crawl slowly up a hill on their stomachs, covered in grime. One man moans after an instructor yanks him by the ankles back down the hill. Still, he keeps crawling. One man lies on his back while ...