I'm not just talking about death camps, though that and the road to it has alone provided fertile ground for a genre of wildly different movies - The Pianist, Schindler's List, Amen, Life is Beautiful, The Counterfeiters, Conspiracy, etc.
WW2 and its memorable battles, incidents, campaigns, etc. also offers, just offhand, these movies...
Dunkirk - one small situation in a massive war.
Patton - one man.
Downfall - one week in Hitler's bunker at the end of the war.
Letters from Iwo Jima - USA island hopping on the way to Japan, doesn't even touch on Europe.
Valkyrie - an unsuccessful plot to assassinate one man in one country in the war.
Hacksaw Ridge.
Stalingrad.
Enemy at the Gates.
Judgment at Nuremberg.
Fat Man and Little Boy.
By the way, these are all just sticking to factual people or incidents, and not using WW2 as a setting for stories... E.g. Inglourious Basterds, the Dirty Dozen, Fury, The Boy i Striped Pajamas, Saving Private Ryan, Das Boot, U-571, Bridge on the River Kwai, The Great Escape, The Thin Red Line, A Bridge Too Far, Cross of Iron, Kelly's Heroes, The Reader, Casablanca.
Etc.
It's you who made the mistake of thinking "only death camps" when I said WW2 has many stories.