This might create its own genre - augmented reality action. The movie does a brilliant job of seamlessly mixing play-action with the kids' imagination. You're engaged from the first minute and there are no lulls for navel-gazing or teachable moments, but there is plenty of thought-provoking material. It even treats differences between boys and girls fairly - a girl is involved in the war and the boys aren't all portrayed as knuckle-dragging buffoons easily outwitted by her strong-capable-womyn-ness, in the typical style of Hollywood over the past 20 years or so. One of the best movies I've seen this year.