there are a lot of "war movies" that are simply good movies, that don't glorify war for entertainment without showing the results of war.
though... there are always debates as to whether a movie glorifies war or not. when a great movie comes out, people with an agenda will often try to claim it as their own; I read the anti-war and pro-war advocates both did that with Patton, which came out during Vietnam. Supposedly, Nixon was so inspired by it that he ordered the bombing of Cambodia.
I wouldn't refuse to see a movie because some idiots take it as pro-war... but I do think that there are some movies that are objectively pro-war, and they're typically made with extensive Pentagon support (like Top Gun) or intelligence agency support (like the CIA with ZeroDarkTHirty). I read
this article when it came out documenting that. It seems there are a couple directors (Kathryn Bigelow and Peter Berg) who's careers have basically become getting paid to direct pro-war movies on behalf of the US gov't. you could argue that this is basically against the law, since there are federal laws against the Pentagon spending money domestically to influence opinion... but I guess the Department of Justice has other things to worry about.