Master Chief nukes some Covenant in this CG trailer for Halo: The Master Chief Collection.
Halo: Nightfall - Official Trailer
The official trailer is out for the Halo: Nightfall series.
Halo 2: Anniversary - Cinematic Trailer
Take a first look at the overhauled Halo 2: Anniversary cut-scenes in this trailer from Blur Studio.
Halo 4 - Concept Art Trailer
There is some inspiring scenery in this concept art trailer for Halo 4 from 343 Industries.