There are 3 uses of the F bomb. GD is used 11 times as well. N word once. If given an MPAA rating it might squeak by with PG13 but R is probably necessary due to language, adult theme of war.

3 uses of "fuck", 5 uses of "shit", 22 uses of "hell", 16 uses of "damn", 4 uses of "son of a bitch", 11 uses of "goddamn", 5 uses of "ass", 1 use of "bastard", 4 uses of "Christ", 3 uses of "Jesus", and 1 use each of "for Christ's sake" and "N*gger".