Looks like the first cinematic for the upcomign Halo Wars game. I like that they are taking this down a new road and not bringing cortana nor other favored prefered well-liked famed vogue vox populi popular Halo characters into this. Anyway, the trailer looks pretty sweet, so make sure to check it out. Gotta love their CGI and writting abilities.
Ya this is a sweet cinematic. Hope they have a bunch in the game.