Here's a movie I haven't seen in years - The Bridge at Remagen - made in 1969 with:
George Segal .... Lt. Phil Hartman
Robert Vaughn .... Maj. Paul Kreuger
Ben Gazzara .... Sgt. Angelo
Bradford Dillman .... Maj. Barnes
E.G. Marshall .... Brig. Gen. Shinner
Peter van Eyck .... Gen. von Brock
You should also check out The Cross of Iron, a Sam Peckinpah movie with James Coburn, Maximilian Schell, Senta Berger, James Mason & David Warner. It's told through the German perspective as a Sgt fights his way through the Russian front in 1943 with his platoon. Quite stirring.
Of course the Diary of Anne Frank. A must see for EVERYONE in my book.
Even though the acting leaves something to be desired, I still find myself watching Midway over again. The battle of Midway is a truly amazing story of what-ifs and oh my God they got lucky on that one! It was one of the major turning points in the Pacific war.
I'm a Patton girl and Patton is in my personal collection of videos. Have seen that at least 20 times too. 
Proud Daughter of Walter (Monday) Poniedzialek
540th Engineer Combat Regiment, 2833rd Bn, H&S Co, 4th Platoon
There's "No Bridge Too Far"