Well - if it gets my two kids asking their teachers more about Dunkirk - then it's done it's job as far as I'm concerned.
Even better if they can come back and point out the inaccuracies.
The three of us watched The Aviator last night.
Dramatic Hollywood shtick - but lots of questions afterwards about Hughes, whether the Goose actually flew, the XF-11 - and how he ended his days.
Use any means to get them interested I say.
One of the best series we saw recently was `WW2 from Space' using computer graphics and satellite imagery to illustrate the truly global nature and enormity of the conflict.