There's both ground combat and space combat featured, with Klingon, Federation, and Borg ships taking part in the overall action. In one scene we see a fleet of ships attacking a single Borg cube in quite a nice display of firepower, including several (of what appear to be) quantum torpedoes.
One of the more impressive aspects of this gameplay footage that we picked up on right way was the tactical maneuvering of what appears to be a mid-range ship of Romulan design. A captured still of the scene is pictured above, and you can clearly see in the video that the ship is moving to direct hits against its "bottom side" after the port shields were taking a significant beating. Note that the two ships attacking the main ship with green phasers are Klingon Vor'Cha class, so we're assuming the ship demonstrating the tactical moves is of Romulan origin.
We also noticed that the ship pictured above bares some resemblance to the unidentified "classified" ship listed in the Ships of the Line articles at the official STO website. The above ship can be viewed more clearly in the HD trailer, however the unidentified ship on the STO website doesn't have a clear image -- only a blurry reconnaissance image. The warp nacelles both look similar (espeically if you take the image angles into consideration), both have the same general outline, and both have guns protruding from each wing. An interesting coincidence we wanted to point out.
The video after the break.