User blog comment:JoshCF1/The State of the Call of Duty series./@comment-1646923-20110206171106/@comment-1191892-20110206195924

Well, that would rather depend if Bethesda has actually tried to copyright that particular phrase as a product name. Which they probably haven't.

Anyway, it's not like Metal Gear Solid 4 hasn't already had that whole "war has changed" monolog without being sued.