I don't even know how to respond to all this. I am trying to keep my hype meter from breaking under the pressure.
BF 1942 is my favorite game of all time (combined with Desert Combat). If you aren't familiar with Desert Combat or it's history (it was a mod) read up on it as it is very very interesting. WW1 or 2 would be incredible but if the trailer is full of Euro-Dubstep and has planes flying 5x faster than they should with rockets everywhere then i'm out.
I simply don't trust that Dice will do this right. They have been burning me ever since Bad Company. I did like BF 4 though after that massive patch that fixed a lot of the issues.
Also, based on his eye movement it doesnt look like the gif is in slow motion, meaning whatever is casting that shadow is moving relatively slow. I'm going to make a prediction right now and say that the trailer or at least that scene is of a soldier (probably in a city like London) with a zepplin of some kind flying overhead.