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All in all, this film does not care about grand strategy. You will get exactly zero additional bits of that over what is revealed in the trailer. This doesn't make it a bad movie, but if, like me, you like that, then it can be a bit disappointing. We don't even really know who all is on what sides. Somehow the "western forces" consist of California and Texas, but I guess somehow Florida is with them, but not of them, and who knows who else....but they're fighting all along the path from New York to DC.
I frankly don't know how that arises exactly, but the film's not really about that. It largely cares about exploring its main characters. The journalists do occasionally ask in ways that come across as somewhat stupid/risk taking with regards to a war, but their role and character motivations justify this fairly well. Taking a risk to get the shot is, well, kind of the game we're here to see. Mostly people are well motivated, and the set dressing works pretty well.
I'll also note that this film contains probably the best example of deconfliction actually happening in a combat movie. It is weird watching people shout "clear" when they are working with nobody outside of their same room in many war movies. I'm sure they had a consultant for room clearning brought in to get this level of detail.
The helicopters are...less well handled, with awesomeness of shots being prioritized over realism. Mostly, you're not actually going to hover your CAS helicopter down between buildings, because that just makes you a huge target. Likewise, you don't hot drop in with humvees with cargo helicopters en masse. That's...weird. You'd just lose a crapton of both. That's something you do for transportation when terrain's an issue so you can't drive, but you have low immediate danger. Also, as a more pedantic complaint, when you see a helicopter go through smoke in real life, the fog/smoke is absolutely greatly affected by the blades. It isn't here. I get it, CGI for particle effects can be super expensive, and ignoring it was probably the smart cost choice, but it's a weirdly out of place bit of unreality.