1. The press baselessly claims that the bugs somehow ‘launched’ meteors at the Earth, when the meteors could have easily just been natural disasters. On the other hand, we know for a fact that Earth has assaulted another planet.
2. A bug catches one of the troops and severely injures him. The general doesn’t shoot the bug, but instead the victim, to end his suffering, then the bug gets away. A perfect example of how wasteful capitalist militaries can be.
3. One of the troops somehow concludes that a fellow human sent a distress signal not because they were under assault, but to lay a trap for the troops. Shortly afterwards somebody obliviously sent a distress signal to others, presumably ‘trapping’ them too (by his own logic).
4. Somebody seriously suggests blowing up the entire bug planet, which is hypocritical given that a meteor’s devastation of Buenos Aires was the excuse for reinvading.
5. Somebody suggested that human intrusion on the bug planet was exactly why the bugs were so upset with us in the first place. They brush this question off. So the entire conflict could have been avoided had humanity simply minded its own business.
6. Late in the story there is a graphic scene of the ‘brain bug’ sucking out somebody’s brains, but it isn’t vastly different from a scene earlier in the story when the students were dissecting dead bugs.

This is what a good satire looks like. The only time that it bonks you over the head is when an officer nonchalantly says that his service was what ‘made him the man that he is today’, then the camera immediately shows us his missing legs. Everything else is very subtle.