GameTrailers has made available the first official trailer for
Red Alert 3, called the Hell March Trailer. You can download it from GameTrailers below:
I highly recommend you take a look at the HD one. The gameplay footage shows some pretty interesting units in action. You'll also surely pick up on some sound effects from prior Red Alert games, in addition to the ubiquitous
Hell March track.
Sonic at CNCNZ has taken a number of
screenshots from the trailer, which make great eye-candy.