>>955722
Looking through the trailer shows that they are closer with the inclusion of the skinny aliens.
It seems they couldn't let parts of the movie die though, in the book Rico and crew always knew the bugs were smart and had some hierarchy of intelligence. The book also stated that the war wasn't really started by any one side, it was the simple mathematics of competing biology; fight, grow and win, or die.
Rico never got command proper until the very end of the book, the vast majority of it was musings on the proper application and navigation of authority along with the systems required to ensure their continued working order.