"In order to get your trailer to qualify as "very Call of Duty," it must satisfy all of the following requirements:

It must have explosions. And by explosions, we mean 3 within 2 seconds of one another.
It must have a narrator who spouts really powerful pieces of theory... using it as an excuse to blatantly shoot people in the face.
Rappelling is a must. Combine it with guns and death for added impact.
At least one stealth kill is required.
It can't be classed "very Call of Duty" unless there is at least one vehicle crash, preferably a chopper.
More recently, but not a massively important requirement: space flights - or high-altitude flights - are becoming cool and mysterious.... like when you lose a sock in the washing machine.
It must also, on the face of it, not tell you much about the game. But upon closer inspection, you should be able to find out the main character's mental history and underwear status from clues within the trailer.
Oh, that reminds us... there is a new Call of Duty: Black Ops trailer out! It's all gameplay as well. Oh, and it also has an exploding crossbow! Eat that Rambo!"

To see the original post and the trailer click here. When you see this trailer is prety amazing but yet all the call of duty trailers have been really good. From the trailer that graphics seem to really have inproved from trey archs latest game call of duty: world at war. I think that its very interesting that they picked vietnam for a game this time. Theres not alot of games out there that focus on vietnam.