In my opinion, it doesn't matter. The public has a long history of referring to the unit by that name. Novalogic didn't create the term "Delta Force", nor does their trademark give them an exclusive to use that phrase in reference to the real life unit. Unless they can show that Activision is calling their own game "Delta Force" or directly copied their logo (as opposed to copying a real life unit logo from the Delta Force), I can't see how this case goes anywhere. Activision will likely pay a nuisance settlement and this will all go away.