When it comes to war movies, the fast-paced action blockbusters that have defined American pop culture since the ‘80s have a bad reputation: massive explosions, impossible marksmanship, and nobody ever, ever runs out of ammo. Yes, it’s a hole the genre is finally starting to dig out of with incredible technical expertise on display in more recent Hollywood projects like John Wick  and 13 Hours, or in TV miniseries like History Channel's SIX. But if you want proof that this wasn’t always the case, just look back a few decades to the age of “unlimited ammo.”