Lone Survivor (2013)

Everything outside of the climactic face-off, in this "true" war
film (based on ex-Navy Seal Marcus Luttrell's best recollections)
is garbage, the lowest rent flag-waving. But the hour or so from
engagement with the enemy is jaw-dropping. Director Peter Berg
may have next to zero skill when it comes characters talking but
the actually bone-crunching carnage, is some of the most brutal
and hopeless to underpin a major Hollywood patriotic exercise.