While James Cameron does a good job of making Quaritch the bad guy, I have wondered if his skills were perfect for Pandora.
Remember that RDA was operating with extremely limited resources with only minor reinforcements (remember the ISA was only replacing personnel, the only way to increase personnel is to increase the fleet servicing Pandora). This means that whatever the SpecOp commanders' do their priority is to do it with as few causalities as possible. Quaritch's 'shoot it to hell' strategy obviously would acheive this even at increased native cost. His counter strike/punishments would also help provide disencouragement for native attacks on the miners if making relationships overall worse.
Unfortunately such skills/qualities would quickly become a double-edged sword. While such tactics would have been fine in a purely defensive role (RDA staying in thier bases/dig sites), once they became expansionary Quaritch's tactics would simplely push the natives over the edge and into war (which is what happened).
On a side note is Quaritch's name ever said in the movie?, the first time I heard it was in the game.


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