A trailer for the recently released Battlefield 3 expansion / DLC - Back to Karkand - showcasing Wake Island.
Not familiar with the map? Wake Island originally debuted in Battlefield 1942, and has also been in several other Battlefield games since. It's kinda like a Battlefield signature, really, with it's atoll-based combat making for a very interesting and dynamic playfield.
Back to Karkand is available now, for 1200 points or $29.95, depending on your platform, or as a free bonus - depending on which version of Battlefield 3 you bought originally.