I nominate every war movie as pure dogsh**, with the exception of SPR, Apocalypse Now, Platoon, A Bridge Too Far, and, marginally, The Thin Red Line. Some particularly rotten ones: The Longest Day (I don't care what anyone says, it sucked), Battle of the Bulge, and the all-time worst, Battle of the Last Panzer (where they actually used American tanks with Swastikas on the side as the Germans!).