...mind vacation.
I usually spend more time picking the movie apart. (To myself.) More often than not, stuff is done to move the plot along or because the accuracy of a particular part is not important.
In war movies, the biggest tip off is how people salute. It takes five minutes, tops, to teach someone to salute properly. Most movies and TV shows get it wrong.
The only one consistently getting it right was Battlestar Galactica. Just about every other show just butchers minor military things.