User blog comment:JoshCF1/The State of the Call of Duty series./@comment-1646923-20110206171106/@comment-28584497-20110206202607

It is illegal to plagiarize a copyrighted phrase. If I decided to try and market my own videogame with the catchphrase "No one fights alone", I would be sued by Activision for copyright infringement. Similarly, if Activision tries to market a game with the name/catchphrase "war never changes", bethesda can sue them.