** War of the Buttons Adapting the celebrated 1912 kids-in-conflict novel by Louis Pergaud, director Christophe Barratier and his co-writers shift the action to Nazi-occupied France. Newcomer Jean Texier plays the leader of a junior gang involved in a turf battle with a neighboring village. But there’s a lighthearted, boys-at-play manner that creates an odd disconnect. War and persecution are bad, kids — except when it’s all in good fun. In French with subtitles. (100 min., PG-13) (Tom Russo)
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