adaptation comparison - In the Starship Troopers movie, what remains of Robert A. Heinlein's original novel?

I enjoyed watching the movie Starship Troopers and the issues it "addresses" (to use the term lightly). However, Wikipedia says:

The film diverged greatly in terms of the themes and plot of the novel, and received mixed reviews from critics.

How did the film diverge? What remains of Robert A. Heinlein's original novel?

Answer

First, major differences:

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  Moral/philosophical/ethical/political/social underpinnings.

  
  
  
  
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    The novel was an ode to the citizen soldier, with in-depth asides for explaining the ethical and political system of humanity.

    
    

    Christopher Weuve's excellent "Thoughts on Starship Troopers" resource addresses this in great detail with supporting cites, see especially "Myth #3" section.

    
    

    Very specifically, the society was in no way fascist/militarist. The power is held by civilian authorities (see Zim's quote below as well); you don't get to vote until you retire from the Civil Cervice; you don't even need to be in the military to earn Citizenship; you don't lose any rights except franchise by not serving; and the overall amount of freedom seems to be higher than most democracies in Real World.

    
    
    

    Additionally, H&MP teacher in Rico's school, Mr. Dubois, waxes eloquently on freedom in Chapter 8, portratying freedom in a very positive light, as something that should be fought for (and tyranny as something that should be opposed).

    
    

    Paul Anderson (not exactly a right wing jingoist) summed it up best:

    
    

    
    

    I never joined in the idiot cries of "fascist!" It was plain that the society of Starship Troopers is, on balance, more free than ours today. I did wonder how stable its order of things would be, and expressed my doubts in public print as well as in the occasional letters we exchanged. Heinlein took no offense. After a little argument back and forth, we both fell into reminiscences of Switzerland, where he got the notion in the first place. ["RAH: A Memoir."]

    
    

    
    
  
  
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    The movie was basically a satire of fascism/militarism, with absolutely the opposite message/idea from the book. And the satire was based on Verhoeven-made-up strawman society which had virtually nothing in common with one in the book.

    
    
  
  
  
  
  

  Of course, given that, none of the book's many moral/political philosophy bits (or deep game-theoretical and historical rationales for espoused philosophies) are even remotely alluded to in the movie aside from brief mention that people enlist so they can be citizens and vote.

  
  


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  The book focused much more on training and the ethos of the soldier.

  
  

  In the movie, the ethos was merely "kill kill kill", as per the prior point.

  
  
  
  
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    As a very interesting pinpoint example, witness the training scene with Sgt. Zim teaching recruits how to throw the knives.

    
    

    In the film, this is basically just the usual attempt to show military to be between mindlessly jingoistic and sadistic, with Zim's answer pretty much being to put a knife through the questioner's hand.

    
    

    In the book, Zim provides two thoughtful answers, one military (and deeper than one in the film), and another, more important one, a whole mini-lecture about measured use of force... interspersed with the notions of civilian control of the military.

    
    
    

    
    

    The purpose is never to kill the enemy just to be killing him . . . but to make him do what you want him to do. Not killing . . . but controlled and purposeful violence. But it's not your business or mine to decide the purpose or the control. It's never a soldier's business to decide when or where or how — or why — he fights; that belongs to the statesmen and the generals. The statesmen decide why and how much; the generals take it from there and tell us where and when and how. We supply the violence; other people — 'older and wiser heads,' as they say — supply the control. Which is as it should be.

    
    

    
    

    Hardly a rah rah jingoistic militarism made-up to be caricatured by Verhoeven. This is a drill sergeant - basically, the main source of training and wisdom of recruits - stressing civilian control of the military. This is 180 degree opposite of "Militaristic".

    
    
  
  
  
  


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  Johnny Rico's ethnicity was changed. In the novel Juan "Johnny" Rico is Filipino (and Carmen is Hispanic, last name Ibanez). Heinlein was known for putting minority characters in important roles in his novels and often in a positive light at a time when ethnic diversity in SciFi to say nothing of the status of race relations in the United States (segregation) at the time of writing.

  
  

  In the movie Rico and Carmen are depicted (both casting wise and as characters) as typical all-American Homecoming King/Queen.

  
  
  


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  Power armor - which makes one of the main points of the book's scifi components - doesn't pop up in the Verhoeven movie (and only pops up in CGI sequel #3).

  
  

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Book Plot details missing from the movie

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  Rico's entire Officer Candidate School arc is missing.

  
  
  


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  The "Skinnies" aren't mentioned in the movie, in the novel they're allied wit the Bugs initially; and are in the first combat scene we see (where Dizzy dies).

  
  


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  Rico's MP teacher (Col DuBois), his first commander (Lieutenant Rasczak) and Sgt/Lt Jelal were all compressed into a single Rasczak character.

  
  

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Movie Plot details made up despite not being in the book

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  The love plot with Carmen and Johnny is non-existent in the book (she merely has a brief platonic date with him when he's in OCS).

  
  


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  Co-ed military, especially common showers

  
  


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  Romance between Rico and Dizzy Flores (who's a male soldier in the book)

  
  



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  Pretty much entire story with Carmen (training, participation in space battle #1, participation in space battle #2).

  
  

  In the book, she enlists, and isn't heard of aside from except from meeting Rico once when he's in OCS.

  
  


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  Carl's character (who dies early in the book, off-page), gets merged with a listening specialist "talent" character, and with not-actually-shown-in-the-book intelligence officers; to become, in the movie, a very nazi-looking (link, link, and especially link) and to put it mildly, unsympathetic, intelligence officer.

  
  


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  Entire naval fighting. In the book, all we see of the Navy is the MI carriers function - no space warfare.

  
  

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Minor differences:

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  The Bugs in the novel are much more technologically advanced, employing firearms and starships

  
  


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  Johnny's father lives in the novel, he's away on business when Buenos Ares is hit and his wife dies, leading him to enlist in the Mobile Infantry eventually serving under his son's command.