Starship Troopers is a strong action movie, a near-classic sci-fi movie, and an absolutely hilarious critique of war movies and war propaganda.
On the surface, Starship Troopers appears to be an ultra-simplistic sci-fi war movie in which heavily-armed space soldiers battle giant monsters. Delve a little deeper, though, and notice that so many of the scenes in this movie are recreations of old WW2 and Viet-Nam era propaganda taken to the extreme. Just as war propaganda (on both sides, mind you) always seeks to dehumanze the enemy, depicting them as savages or barbarians or simply "godless," here, the enemy actually isn't human. It is the ultimate "other," a monster, an animal, a BUG.
The training scenes are riddled with the clichees of war movie training scenes. But the overuse of clichees are not, here, the signs of bad screewriting, but an attempt to hilight and ridicule these tropes while forcing us to admit that, really, we kind of enjoy them.
Anyway, if you haven't seen Starship Troopers or have but think it silly or stupid, watch it (again) and pick out all those scenes that make light of classic war movies and old (and not so old)-fashioned war propaganda.
It's a fun, bloody, thrilling, and hilariously clever film.