I once watched videos of "Porkchop Hill" (Korean War) and "Hamburger Hill" (Vietnam Conflict) back-to-back.

Don't. Especially don't if you're a veteran. You'll just get mad.

In "worst" category, how about "The Boys In Company C" or "Apocalypse Now"? The first is pretty bad and the second not only pretentious but a knock-off of "Heart Of Darkness."