When you have a nice splatter movie like Starship Troopers and add a lot of satirical puns and black cynism to it (as could be expected from Verhoeven) you cannot expect the movie to be taken well everywhere. Especially the glorified notion of the world being governed by a fascist military regime which only acknowledges soldiers as full citizens able to vote can be considered rather problematic.
This led to a lot of dialog censorship, e.g. in Germany. But it is interesting that there was a rather special censoring in Japan, the country in which (let alone pornography) does not seem to think that censorship is necessary very much. A sarcastic comment about the Second World War, however, seems to have done the trick though so the complete scene was removed.
It seems that there is always something to protect, be it political ideas or personal feelings...
1 removed scene = 12 sec
When Dizzy says that her mother told her that violence never solved any problems, Rasczak answers, smiling derogatorily: "Really?". He then asks the class "I wonder what the city fathers of Hiroshima would say about that." and bumps Carmen with his stub arm. She answers with her permanent smile "They probably wouldn't say anything. Hiroshima was destroyed." Rasczak looks up and adds "Correct."