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Everybody knows the basics — less health, blue-on-blue fire, no HUD. But what are specifics? How much less health? What other differences are there? How does the game style change?

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What is the blue-on-blue fire ? – Luc M May 14 '11 at 22:49
@Luc: friendly fire – vartec May 14 '11 at 23:48
up vote 2 down vote accepted

Click this link for the full changes: Call of Duty Wiki

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