Whats a great WWII movie. Dirty dozen is too comical
Saving private Ryan. Band of brothers and pacific if you want a mini series
Patton, Saving Private Ryan
Bridge on the River Kwai
The Great escape,Hell is for heroes,Days of glory.I would say Saving private Ryan,but the others said it.
Pearl Harbor was pretty good. Flags of our fathers was too. Enemy at the gates was also an awesome movie, though it was more from a Russian versus Germany perspective.
There is also Battle of the Bulge; The Longest Day; A Bridge Too Far; Back to Bataan; Merrill's Marauders; An American Guerilla in the Philippines; Where Eagles Dare; The Eagle has Landed; The Big Red One.
Enemy at the gates, saving private ryan, and flags of our fathers.